音标:[plæsen'teiʃәn] ;
[解、动]胎盘形成
n the formation of the placenta in the uterus
n arrangement of the ovules in the placenta and of the placentas in the ovary
词型变化:名词复数形式 : placentations

placentation的用法和样例:

词汇搭配

  • basal placentation基底胎座式
  • axile placentation中轴胎座式
  • apical placentation顶生胎座式
  • central placentation中柱胎座式

Prenuptial agreements, which are widely accepted in western countries, are still rarely paid attention to in China. But since the recent interpretation of the Chinese Marriage Law triggered widespread debate within Chinese society, prenuptial agreeme

发表于:2018-12-02 / 阅读(322) / 评论(0) 分类 世界各地新闻集锦

[00:03.89]CONVERSATION 1 [00:08.86]TELL ME ABOUT YOUR FAMILY [00:13.22]Announcer:National Flight 294 to Miami is delayed due to severe weather conditions. [00:22.88]Please stand by or additional information. [00:27.87]Maria: Oh no! I hate these long

发表于:2018-12-02 / 阅读(225) / 评论(0) 分类 新英语交谈注释版

[00:03.68]CONVERSATION 1 [00:08.75]HOW ABOUT COMING WITH US? [00:13.01]Debbie: Hi, Kenji. [00:17.45]Kenji: Hi, Debbie. Have a seat. How's it going? [00:22.91]Debbie: I'm OK. How are you doing? [00:27.48]Kenji: Pretty good. Listen ... [00:31.92]have y

发表于:2018-12-02 / 阅读(224) / 评论(0) 分类 新英语交谈注释版

[00:04.18]CONVERSATION 2 [00:09.46]COULD I HAVE YOUR NAME. PLEASE? [00:13.22]Officer: Yes. can I help you? [00:17.97]Ms. Paine: I'd like to open a savings account. [00:22.05]Officer: Certainly. First we'll have to fill out a few forms. [00:27.19]Coul

发表于:2018-12-02 / 阅读(318) / 评论(0) 分类 新英语交谈注释版

[00:04.41]CONVERSATION 1 [00:09.38]DO YOU KNOW WHERE IT IS? [00:13.92]Michelle: What are you doing? [00:18.49]Dominic: I'm cooking dinner tonight. [00:22.05]Michelle: That's great. Thank you. What are you making? [00:27.51]Dominic: A surprise. By the

发表于:2018-12-02 / 阅读(352) / 评论(0) 分类 新英语交谈注释版

[00:04.49]CONVERSATION 2 [00:09.35]WHAT DOES IT LOOK LIKE? [00:13.30]Luis: Teresa? ... I can't find the what-do-you-call-it. [00:20.66]Teresa: What can't you find? [00:24.50]Luis: You know. The thing. [00:28.26]Teresa: What thing? [00:31.50]Luis: Oh,

发表于:2018-12-02 / 阅读(357) / 评论(0) 分类 新英语交谈注释版

[00:03.21]CONVERSATION 2 [00:08.07]I LOVE THE SEASHORE. [00:12.43]Tom: This one looks great! I love the seashore. [00:19.98]Ellen: So do I. The sun ... the sand ... the ocean! [00:26.44]Tom: And listen to this! [00:29.99]What do you think of sailing,

发表于:2018-12-02 / 阅读(324) / 评论(0) 分类 新英语交谈注释版

[00:03.58]CONVERSATION 1 [00:08.54]AND WHAT WOULD YOU LIKE? [00:12.67]Ted: Everything looks good. What are you going to have, Julie? [00:19.33]Julie: I think I'll have the spaghetti and a salad. [00:24.08]How about you? What are you having? [00:28.16

发表于:2018-12-02 / 阅读(308) / 评论(0) 分类 新英语交谈注释版

[00:03.50]CONVERSATION 2 [00:08.36]WHAT DO YOU WANT TO DO? [00:12.43]Henry: Hi, Alice ... have you made any New Year's resolutions yet? [00:20.30]Alice:Just the usual.I'd like to lose some weight,and I want to save some money. [00:26.17]Henry: Come o

发表于:2018-12-02 / 阅读(284) / 评论(0) 分类 新英语交谈注释版

[00:03.29]CONVERSATION 2 [00:08.65]THAT COLOR LOOKS BETTER. [00:12.90]Allen: Excuse me.Could you help me?I'd like to exchange this sweater. [00:20.45]clerk: What's the problem with it? [00:24.01]Allen: It was a birthday gift, but I don't really like

发表于:2018-12-02 / 阅读(262) / 评论(0) 分类 新英语交谈注释版

[00:02.98]CONVERSATION 1 [00:08.25]COULD YOU HELP ME? [00:11.62]Clerk: Hi. Can I help you with something? [00:18.29]Paulina: Yes, please. We're looking for the men's department. [00:23.33]Clerk: It's right over there, by the escalator. [00:27.69]Dieg

发表于:2018-12-02 / 阅读(307) / 评论(0) 分类 新英语交谈注释版

[00:03.50]CONVERSATION 2 [00:08.46]WHY DONT'T WE MEET THERE? [00:13.22]Karen: Hello. Could I speak to Justin, please? [00:20.58]Justin: Speaking. [00:23.14]karen: Oh, hi Justin. This is Karen Hepburn. [00:29.31]We met at Chris and Jim's party. [00:34

发表于:2018-12-02 / 阅读(278) / 评论(0) 分类 新英语交谈注释版

[00:03.29]CONVERSATION 2 [00:08.33]WOULD YOU CARE FOR ANY DESSERT? [00:12.59]Waiter:OK,so that's one cheeseburger and one order of chicken wings,extra spicy. [00:21.13]Would you like something to drink with that? [00:24.69]Carol: Do you have any diet

发表于:2018-12-25 / 阅读(270) / 评论(0) 分类 新英语交谈注释版

[00:03.68]CONVERSATION 2 [00:08.72]COULD YOU CHANGE MY ROOM? [00:12.98]Guest: Excuse me. [00:17.35]Clerk: Yes? What can I do for you? [00:21.71]Guest: I just checked in, and there's a problem with my room. [00:27.38]Clerk: And what is the problem? [0

发表于:2018-12-25 / 阅读(261) / 评论(0) 分类 新英语交谈注释版

[00:04.00]CONVERSATION 1 [00:09.14]SO, WHERE ARE YOU FROM? [00:13.69]Brad: So, Paula, where are you from? [00:20.85]paula: I'm from Canada, originally. [00:24.79]Brad: From Canada? Where were you born? [00:29.65]Paula: Montreal. [00:33.41]Brad: When

发表于:2018-12-25 / 阅读(274) / 评论(0) 分类 新英语交谈注释版

Researchers Say Most Deaths of Newborns Preventable 研究人员表示大多数新生儿的死亡是可以避免的 From VOA Learning English, this is Science in the News. This week, we report on research that shows most newborn baby deaths could be

发表于:2019-01-12 / 阅读(250) / 评论(0) 分类 2014年VOA慢速英语(六)月

Grammar Girl here. Today's topic is verbification. Last week police used a Taser on University of Florida student Andrew Meyer as they struggled to remove him from an auditorium where Senator John Kerry was speaking. The Web has been filled with deba

发表于:2019-01-30 / 阅读(297) / 评论(0) 分类 英语语法 Grammar Girl

1.W: Congratulations to you on your success! 祝贺您取得成功。 G: Thank you very much. 非常感谢。 2. W: Please accept my heartiest congratulations on your cooperation! 请接受我对您的合作表示最衷心的祝贺。 G: Thanks. 谢谢

发表于:2019-02-02 / 阅读(267) / 评论(0) 分类 实用英语

Science and technology 科学技术 Blood simple 简单的输血 A small change in how babies are delivered might abolish infantile anaemia 分娩方式的简单改变可能帮助消灭婴儿贫血 An unkind cut? 争议的一剪? CHILDHOOD anaemia

发表于:2019-02-04 / 阅读(309) / 评论(0) 分类 经济学人科技系列

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Mike Procter. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Imagine a baby boy. Lets call him

发表于:2019-02-14 / 阅读(248) / 评论(0) 分类 环球英语 Spotlight
学英语单词
after leech
AGR fuel element
antiwetting
Anulifera
artmaker
babyproofers
beszel
Bird's formula
Borgosesia
bridge calculating circuit
brighten the chain
Bruecke's reagent
bunder
calamagrostis pseudophragmites koeler
catechizing
Cemaes Bay
chaincessation
choledochus cyst
clamp splice
combined bearing
conversionary
dielectric loss characteristic
dry-sand mould
dynamic data bass parameter
electronic conference system
elliotii
Etla
externally maintained field
extinguishment reserve
extractum liquiritiae
false buckthorn
fidgetiest
foliar application
frozen wall
Fuwa
gelatino-bromide paper
gone green
grapeseed
greased lightnin'
greater-than match
Haribo
heulandites
holocrine secretion
Hospitalet
hull aspirator
incomplete hallucination
indenoindene
keep guard over
lead optimization
luxazone
lyond
Lüllau
machine utilization index
mass spectroscopy
Mcgee graph
meguires
micturition reflex
mulier
multischool
northern holly fern
Obutin
open-ended system
phosphorescence of dyes
phosphoribosylpyrophosphate
photoconductivities
pilot flood
pinselin
pollen plate
Posada de Valdeón
prepared pianos
preproperous
printed-wiring armature
pyranoid
quick balance
rank statistics
reliability design analysis
reopen
report processor
ring-silicate
Ruhmkorff coil
sawnce bell
scarcity of budgetary resources
seepage control installation
shingle bank
sneuel
sprayregen
step printing
straight firing
subsextuple
Swedru
syringocoele
teeth-chatterings
Thamugadi
there-
thermogenic soil
Tupamaro
Twitney Spheres
vicarship
virelai
vitrophyre
white matter (or white nerve substance)
zardaris