[数] 正则收敛级数

[00:01.29]Unit 1 Learning to Learn [00:05.41]Lesson 3 [00:09.64]Exercise 2.2 [00:12.21]Many students ask me [00:13.79]how they can check their progress. [00:16.21]I think a good way to see [00:17.80]if you are learning well is [00:19.46]to do a self-

发表于:2018-12-04 / 阅读(195) / 评论(0) 分类 北师大版初中英语九年级(全一册)

[00:01.10]Unit 1 Learning to Learn [00:05.15]Lesson 1 [00:09.59]Exercise 1.2 [00:13.59]Hi,I'm a Junior high school student. [00:17.13]I had a wonderful summer vacation, [00:20.07]but I found I forgot a lot of my English [00:23.61]after the vacation.

发表于:2018-12-04 / 阅读(203) / 评论(0) 分类 北师大版初中英语九年级(全一册)

The tiny brain of this zebra finch may help scientists answer questions on how people form words to talk. Like humans songbirds learn to vocalize by imitation. Were able to not only just study the mechanisms of how vocal learning works in these songb

发表于:2018-12-08 / 阅读(122) / 评论(0) 分类 VOA标准英语2018年(五月)

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(186) / 评论(0) 分类 Scientific American(一)月

发表于:2018-12-24 / 阅读(170) / 评论(0) 分类 一口气英语

Researchers have discovered an almost universal word. Huh? You say? Even if you are not a native speaker of English, you probably dont need a translation for Huh? It appears that the word, or a very similar form of it, is used in most of the language

发表于:2018-12-28 / 阅读(94) / 评论(0) 分类 轻松英文阅读

Evoking images from the liquid metal and nearly unstoppable Terminator from the movies, BAE Systems has posted concept video footage of a process to create drones of the future. 近日,BAE系统公司发布的一份概念视频展示了未来制造无

发表于:2019-01-07 / 阅读(156) / 评论(0) 分类 英语新闻

提示 1.Dear Mr/Ms,On 14 November I submitted a bill for services renderedto your office at the Lille International Exposition. More than a month has now elapsed without payment oracknowledgment of my bill. Please check this oversight,and remit paym

发表于:2019-01-16 / 阅读(151) / 评论(0) 分类 实用英语

ROBERT SIEGEL, HOST: Biologist Jonathan Losos and I have at least one thing in common - we were both blown away by the late paleontologist Stephen Jay Gould's 1989 book Wonderful Life. Gould saw evolution as being all about odd contingencies, acciden

发表于:2019-01-16 / 阅读(187) / 评论(0) 分类 2017年NPR美国国家公共电台9月

But even though the insect brain is organized very differently from ours, there are some striking similarities. 虽然昆虫与人类大脑的组成大相径庭,但是仍有很多惊人的相似之处。 For example, most insects have smell detecto

发表于:2019-01-17 / 阅读(151) / 评论(0) 分类 TED演讲教育篇

1. A) Dick's trousers don't match his jacket. B) Dick looks funny in that yellow jacket. C) The color of Dick's jacket is too dark. D) Dick has bad taste in clothes. 2. A) Call the police station. B) Get the wallet for the man. C) Show the man her fa

发表于:2019-01-25 / 阅读(339) / 评论(0) 分类 英语六级听力练习集锦

1. A) Dick's trousers don't match his jacket. B) Dick looks funny in that yellow jacket. C) The color of Dick's jacket is too dark. D) Dick has bad taste in clothes. 2. A) Call the police station. B) Get the wallet for the man. C) Show the man her fa

发表于:2019-01-25 / 阅读(241) / 评论(0) 分类 英语六级听力练习集锦

Dogs have been mans best friend for thousands of years, a source of companionship and loyalty since the Stone Age. 几千年以来,狗狗都是人类最好的朋友,从石器时代开始就是人类忠诚的陪伴。 Now scientists suspect they h

发表于:2019-01-31 / 阅读(124) / 评论(0) 分类 英语新闻

Kerry Leaves Pakistan Hopeful, Despite Divides尽管有分歧 克里仍给巴基斯坦留下希望 U.S. Secretary of State John Kerry has wrapped up a visit to Pakistan with an agreement by the two countries to resume a dialogue on security issues. T

发表于:2019-02-01 / 阅读(140) / 评论(0) 分类 VOA常速英语2013年(八月)

Itcanbeinferredfromthepassagethatthe authorwouldbemostlikelytoagreewith whichofthefollowingstatementsregarding socioeconomicclassandsupportforthe rebelandLoyalistcausesduringthe AmericanRevolutionaryWa

发表于:2019-02-06 / 阅读(145) / 评论(0) 分类 英文语法词汇

Science and technology: Panda genetics 科技:熊猫遗传学 Hey dude. Give me six! 嘿,伙计。用六指击个掌吧! Two strange mammals illuminate the process of natural selection. 两种不同的哺乳动物阐明自然选择的过程。

发表于:2019-02-16 / 阅读(166) / 评论(0) 分类 经济学人科技系列

A young man was visiting his brother and sister-in-law for Christmas dinner and was surprised to find his young nephew, Timmy, helping them bake some cupcakes. After they were done, his sister-in-law allowed Timmy to put the icing(糕点上的糖衣,

发表于:2019-02-18 / 阅读(127) / 评论(0) 分类 趣味英语

1.I dont think your plan will work. 我想你的计划行不通。 在职场中能够适时使用这句话会更加职业且地道。 2.He always keeps his words. 他总是信守诺言。 评价别人时常说这样的话,于己于人都没有坏处。

发表于:2019-02-18 / 阅读(116) / 评论(0) 分类 英文语法词汇

How to keep healthy What is the most important thing in the world? I think it is health. You can take away our money, house, car, or even our clothes and we can survive. But if our health was taken away, we would surely die. That is why we always try

发表于:2019-02-25 / 阅读(166) / 评论(0) 分类 英语作文

(1) 表示还有其他类似的人或物,意为:诸如此类;等等一切;之类等等;等等之类。如: His family has gone to the countryside, his parents, brothers, sisters and all. 他一家都下乡去了,他父母兄弟姐妹等其他人

发表于:2019-02-25 / 阅读(149) / 评论(0) 分类 实用英语
学英语单词
a moe
acquest
air to air fighter
allocation of income taxes
apartheidism
apheses
arrival rate of customers
asterina sinsuieiensis
audited accounts
bayer aspirin
Botuquara
branched decay
Cantharellus cibarius
capiton
cellulose acetate fibre
charts
comet of Uranus family
commercializes
copper-bearing
cultivation
desiderantly
Dextro-Propoxyphene
disespouse
down-pipe
dragged out of
eddy correlation method
endtimes
episcopizes
Eupaleozoic
fastlings
feeder container ship
flexible gun mounting
fluoridization method of tooth surface
geared davit
gum rubber
Halys R.
i-tost
independent increment random process
insoluble fibrin
Kestrone
labor completed
laminate finish
lecitho-
linomats
losing rate
loss of ocular motion (lom)
Melóng
mould drier
multi-equation
multizone core
Muspelheim
nailfile
nucleus olivaris accessorius dorsalis
on the balance
open ocean
operant chamber
pererrations
phase-comparison
phonoreceptors
phra
Pinhal da Serra
polyporus badius
polystyrene
pressure-induced crystallization
prostriates
quickstone
radioactive assay
rampauge
regular menstruation during pregnancy
regular-type gear lubricant
rifted margin prism
root-knot
rotary dewaterer
ruggedized computer
sausage kerb
sb's field of vision
scence paint
schizencephaly
Schlagsdorf
semicastrate
ship maneuverability
ski orienteering
skutterudite
slipemaster
space of left cosets
sports shop
subabdominal
summation steam flowmeeter
supermanifold
swai
temianka
terraced land
THYR
time-oriented sequential control
transition effect
tutrices
tweendeck bulkhead
unforward
valve spring lifter
vanadium tetraoxide
water-levels
Zarevo