音标:[plә'sentә] ;
n. 胎盘, 胎座
[化] 胎盘
n. that part of the ovary of a flowering plant where the ovules form
n. the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus
词型变化:名词复数形式 : placentas
词性分布:
名词100%

placenta的用法和样例:

例句

用作名词(n.)
  1. Earlier studies linked the placenta to the disease.早期的研究认为,该病与胎盘有关。
  2. Methamphetamine passes through the placenta and is secreted in the breast milk.甲基苯丙胺通过胎盘分泌在母乳中。
  3. Starch grains present in the embryo sac and placenta are utilized by the embryo.存在于胚囊和胎座中的淀粉粒为胚胎所利用。

词汇搭配

  • retained placenta胎盘滞留,胎衣滞留,...
  • membranous placenta膜状胎盘
  • discoid placenta盘状胎盘
  • discoidal placenta盘状胎盘
  • accessory placenta副胎盘,附胎盘...
  • marginal placenta有缘胎盘,边缘胎座...
  • axile placenta中轴胎座
  • adherent placenta粘连胎盘,胎盘粘连...
  • annular placenta环形胎盘
  • basal placenta基底胎座
  • deciduous placenta[医] 蜕膜胎盘...
  • zonular placenta环形胎盘,环状胎盘...
  • uterine placenta母体胎盘,子宫胎盘...
  • fetal placenta胎盘胎儿部,胎儿胎盘...
  • maternal placenta母体胎盘
  • diffuse placenta分散胎盘
  • placenta duplex双叶胎盘
  • allantoic placenta尿囊胎盘
  • cotyledonary placenta子叶状胚盘
  • duplex placenta两叶胎盘

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(63) / 评论(0) 分类 2014年VOA慢速英语(六)月

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(90) / 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(69) / 评论(0) 分类 环球英语 Spotlight
学英语单词
a clutch
ADDAR
Aludirome
anaerobic cultivation
barra hd.
befriending
billy goat
candy raver
catolico
cercospora zinniae
check and hand over
clothing compulsive
clouded yellows
coal-dust brick
Cobbettian
command telephone
communications policy
crown wire
current operating
cutter unloader
cycloreversion reaction
cyclotrons
definite description
dephenolation
diamond pass
dofat
dry stone fill
embracery
emergency receiver
eniaces
establishment of base line
extended operating system magnetic drum
factifies
finger height
fish-horn
flooding opening
Gbaya
gentleman's gentleman
gland leakage
glaucoma imminens
grey radiator
grooveling
heraclides
high mobility multipurpose wheeled vehicle
idioctionia
instantaneous impact prediction
invariant ideal
inventory audit
isolated ward
job-security
keny
kildeer
Laurierville
maizemeal
Mallotus hookerianus
mark sth. with a white stone
metalophules
Minnetonka, L.
multiformator
multipolar dynamo
National Liberation Front
Neidenbach
neopentyl
neuropapillitis
non-return magnetometer
noncommutative context sensitive language
nonvictims
odwan
p'an
Piersol's points
poppiest
portends
proditor
program-controlled lathe
Prolfen
pulls-over
quota policy
radio-frequency cable
reconductoring
revenge
Rhododendron semnoides
scram discharge tank
scrape together
script error
shoal rock
silver-iron alloy contact
sledgelike
solar house
suncoast
tabulated
tapered block copolymer
target signature measurement
tinn
Tondury
trailer hitches
trizymal
turning short round with the aid of current
unmovableness
us -fest
usea salicylate
Virial coefficients
volcanoes