音标:['pentә,beisik] ;
a. [化]五元的,五基的
a. Capable of uniting with five molecules of a monacid
base; having five acid hydrogen atoms capable of substitution by a
basic radical; -- said of certain acids.

Unit 5 Two Basic Ways to See Growth There are two basic ways to see growth: one as a product, the other as a process. People have generally viewed personal growth as an external result or product that can be identified and measured. The worker who ge

发表于:2018-12-04 / 阅读(67) / 评论(0) 分类 英语流行话题阅读:语境识词4500

[00:00.00]Chapter 7 [00:00.91]第七章 [00:01.83]Computer Virus [00:03.17]计算机病毒 [00:04.52]Dialogue 1 [00:05.56]句型1 [00:06.61]A: Do you have virus protection software on your PC? [00:09.51]你的电脑有防毒软件吗? [00:12.41]B:N

发表于:2018-12-05 / 阅读(132) / 评论(0) 分类 电脑英语

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发表于:2018-12-07 / 阅读(78) / 评论(0) 分类 元元的播客

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发表于:2018-12-07 / 阅读(86) / 评论(0) 分类 元元的播客

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发表于:2018-12-07 / 阅读(70) / 评论(0) 分类 元元的播客

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发表于:2018-12-07 / 阅读(71) / 评论(0) 分类 元元的播客

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发表于:2018-12-07 / 阅读(73) / 评论(0) 分类 元元的播客

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发表于:2018-12-07 / 阅读(75) / 评论(0) 分类 元元的播客

圣诞节快到了,听厌了Jingle Bell吗?就让Jenny和Connor来为大家推荐一些不一样的歌吧。这些都是欧美正当流行的热门圣诞歌曲哦! 圣诞歌曲英语怎么说? 圣诞歌曲除了Christmas songs,还可以说:

发表于:2018-12-19 / 阅读(59) / 评论(0) 分类 美国文化脱口秀

Mary, Did You Know? - Pentatonix Mary did you know take your baby boy 玛丽你知道吗你的圣子 Would one day walk on water 有一天会在水上行走 Mary did you know that your baby boy 玛丽你知道吗你的圣子 Would save our sons and d

发表于:2019-01-10 / 阅读(82) / 评论(0) 分类 2015最新精选英文歌曲

DAVID GREENE, HOST: The big three airlines - American, Delta and United - are taking on discount carriers like Spirit and Frontier by offering no-frills discounted fares called basic economy. Some are calling it misery class because among other thing

发表于:2019-01-16 / 阅读(97) / 评论(0) 分类 2017年NPR美国国家公共电台3月

So awesome, right? Another example is Pentair. Pentair is a U.S. industrial conglomerate. 很棒,对吧?另一个例子是滨特尔。滨特尔是美国的工业集团。 And about a decade ago,they sold their core power tools business and reinve

发表于:2019-01-18 / 阅读(76) / 评论(0) 分类 TED演讲国际问题篇

Basic Military Commands Marta: Whats going on out here? Whats all that noise? Bruno: Im putting the troops through their drills. Marta: Troops?! Bruno: Watch this. Hey, I didnt tell you you could be at ease. Attention! Fall in. Forward, march! Marta:

发表于:2019-01-23 / 阅读(148) / 评论(0) 分类 2014年ESL之日常生活

May 1 marks the 50th anniversary of a special computer language aimed at enabling college students not trained in mathematics to use computers. The birth of BASIC is now seen as a major step toward the era of personal computers. 50 years ago, compute

发表于:2019-02-05 / 阅读(119) / 评论(0) 分类 英语新闻

By Douglas Bakshian Manila 06 May 2008 A new report says the lives of millions of young children could be saved each year if basic medical care and medicine are made available to the poor. Douglas Bakshian has more from Manila. The report by the U.S.

发表于:2019-02-05 / 阅读(111) / 评论(0) 分类 VOA标准英语2008年(五月)

与数字有关的英语词根总结 milli-【千分之一】例:milliampere(毫安)=milli(千)+ampere(安培) centi【百分之一】例:centimeter(厘米)=centi(百分之一)+meter(米) deci【十分之一】例:decibe

发表于:2019-02-06 / 阅读(141) / 评论(0) 分类 英语学习方法

用数学知识强化记忆 fourscore = four(4)score(20) 80 美国第16任总统林肯演说词第一句:fourscore and seven years ago, 那么,怎样才能记住 fourscore 这个词而终生不忘呢?只要我们了解了fourscore 的逻辑思维

发表于:2019-02-21 / 阅读(75) / 评论(0) 分类 实用英语

【大森】美国sing-off冠军Pentatonix最新纯人声超赞翻唱Calvin Harris和绵羊音Ellie Goulding热单《I Need Your Love》。人声合唱搭配五彩缤纷的mv剪辑,让人眼前眼花缭乱的同时身体也不禁随着节拍舞动起

发表于:2019-03-11 / 阅读(215) / 评论(0) 分类 好听的英文歌曲
学英语单词
alkali-resistant beaker
aphrophoras
automatic colour separation device
baer stapler
bandwidth hog
barkas effect
bedrockrockbottom
beer muscles
Beethoven exploder
bloodysputum
borduring
boron carbide fiber
brittlebush
buyable
centre control board
cereals and oilseeds processing machinery
chilladors
circuit contact
close one's ears to
collalto (hochgall)
come to town
constult
contact icing
cordless terminal
cornigera
country ham
cross-referencing system
deadener
decision for context free grammar
delocalized pi-bond
department hour rate method
dirt collector
double sampling mode
Dugong idae
folliott
free gas cap
gamma-function
generalized Green's function
genus hippocrepiss
giovans
give one's word of hono u r
gold auction
Gouin accumulator
gruard rail
high-titer
home sweet home
horizontal parabola dc control voltage
HSAM
hydropneumatic recoil system
imperialities
inflow entrance
interest-rate futures
kiddywinkle, kiddywinky
lattice continuity
limit of rollability
lock-in-clause
long-wavelength region
mabels
maugein
Maughold Head
mazonia
miscreates
moblog
moist cough
ne-yo
neo Impressionism
noncommitally
nuclear fuel fabrication plant
numinen
oil cells
oil rigs
onkilonite
organiza
orifice-metering coefficient
pay his attentions to
pedestrian barrier
physician-patient
Populus lancifolia
premium and bond issuance expense
printed works
qualified audit certificate
randonne
raw wounds
real analytic fiber bundle
rotating field type alternator
runaway collision
Salix gyirongensis
secure against
share the booty
side-tracking
silent agitators
skysurfing
socket base
Socratics
solanum wendlandiis
southern chernozem
squeezed fold
Stadol
valvular
wet-ink pen
without success
zone of pollution