吸光测定法

Editors note: This is the third episode of four-part series on verb tenses. Be sure to listen to part one and part two first. For VOA Learning English, this is Everyday Grammar. Today we are going to talk about the perfect verb tenses. Perfect tenses

发表于:2018-11-27 / 阅读(496) / 评论(0) 分类 2016年VOA慢速英语(十二)月

a an abandon abide ability able abnormal aboard abolish about above abroad abrupt absence absent absolute absolutely absorb absorption abstrate abstract absurd abundance abundant abuse abuse academic academy accelerate acceleration accent accept acce

发表于:2018-11-30 / 阅读(256) / 评论(0) 分类 2005星火考研词汇记忆指南

diesel sincerity hit thrash dilute spiral absorption inject diploma groan infer summit foremost confront between popularity offence exemplify blunt assessment pact tuition wrath allied

发表于:2018-12-01 / 阅读(238) / 评论(0) 分类 用Mp3背六级单词

Leaves Inspire Better Solar Panels What do leaves and solar panels have in common? Both absorb sunlight and turn it into energy. But while solar panels typically have smooth surfaces, leaves have tiny wrinkles and folds that allow for maximum light a

发表于:2018-12-31 / 阅读(150) / 评论(0) 分类 英语听力文摘 English Digest

Imagine a world where sunlight can be captured to produce electricity anywhere, on any surface. The makers of thin-film flexible solar cells imagine that world too. But a big problem has been the amount of silicon needed to harvest a little sunshine.

发表于:2019-01-08 / 阅读(186) / 评论(0) 分类 Scientific American(二)月

New design produces flexible panels using only 1-2 percent as much silicon Art Chimes | Washington, DC 19 February 2010 You can use 100 times less silicon. And that's potentially very significant. Harry Atwater Schematic diagram of the light-trapping

发表于:2019-01-13 / 阅读(178) / 评论(0) 分类 VOA标准英语2010年(二月)

Ethiopian Jews Settle Into Life in Israel Israel is marking the 20th anniversary of a massive airlift of Ethiopian Jews called Operation Solomon. The arrival and integration of tens of thousands of Ethiopians into Israeli society have presented major

发表于:2019-01-13 / 阅读(160) / 评论(0) 分类 VOA标准英语2011年(十一月)

Everything Old is New Again at Met Breuer Museum NEW YORK When it comes to art, perspective is everything. Perhaps that's why directors at New York City's famed Metropolitan Museum of Art decided to shift theirs, setting their sights on a new locatio

发表于:2019-01-14 / 阅读(164) / 评论(0) 分类 VOA标准英语2016年(三月)

直到我遇见你 The Sunstreak - Until I Met You Until I Met You The Sunstreak I once believed that there was no one for me, until I met you, But I couldnt see how happy I could be, until I met you, Until I met you, You Standing alone, no one to ca

发表于:2019-01-16 / 阅读(291) / 评论(0) 分类 好听的英文歌曲

Havent Met You Yet by Michael Buble I'm not surprised Not everything lasts I've broken my heart so many times I stop keeping track Talk myself in I talk myself out I get all worked up And then I let myself down I tried so very hard not to loose it I

发表于:2019-01-16 / 阅读(218) / 评论(0) 分类 听歌学英语

深情爵士男声Michael Buble Haven't Met You Yet Michael Buble I'm Not Surprised Not Everything Lasts I've Broken My Heart So Many Times, I Stop Keeping Track. Talk Myself In I Talk Myself Out I Get All Worked Up And Then I Let Myself Down. I Trie

发表于:2019-01-16 / 阅读(357) / 评论(0) 分类 好听的英文歌曲

DAVID GREENE, HOST: Ohio's governor, John Kasich, is back on the national stage this week. He's out with a new memoir about his bid for the 2016 Republican presidential nomination. The book is called Two Paths: America Divided Or United. I spoke with

发表于:2019-01-17 / 阅读(142) / 评论(0) 分类 2017年NPR美国国家公共电台4月

新编英语教程第六册unit03_2_The_Night_the_President_Met_the_B

发表于:2019-01-25 / 阅读(235) / 评论(0) 分类 新编大学英语阅读部分

A share A股;甲类股份 abatement of tax 减税;减扣免税额 ABN AMRO Bank N.V. 荷兰银行 above-the-line expenditure 线上项目支出;经常预算支出 above-the-line receipt 线上项

发表于:2019-02-01 / 阅读(192) / 评论(0) 分类 财会英语

Around the world, many people start their day with a cup of coffee, a cappuccino, or an espresso. At the same time, there are many people with various thyroid conditions who rely on synthetic thyroid hormone replacement medication like levothyroxine

发表于:2019-02-01 / 阅读(200) / 评论(0) 分类 实用英语

Dear Fabrizio, The day we met is the day I will never forget. Over and over I replay our chat and our first telephone conversation in my mind! You are so amazing you drive me crazy! You make me feel so happy and complete. If I hadn't met you. I know

发表于:2019-02-01 / 阅读(166) / 评论(0) 分类 实用英语

Dear Fabrizio, The day we met is the day I will never forget. Over and over I replay our chat and our first telephone conversation in my mind! You are so amazing you drive me crazy! You make me feel so happy and complete. If I hadn't met you. I know

发表于:2019-02-04 / 阅读(174) / 评论(0) 分类 英语作文

So there I was at seven thirty in the a.m., perched on my scooter at an intersection waiting to turn. I was sitting at the lights lost in my own thoughts when all of a sudden I became aware of a presence no, not a poltergeist; a bloke on a mountain b

发表于:2019-02-07 / 阅读(237) / 评论(0) 分类 阅读空间

Photo of my wife 我老婆的照片 A businessman enters a tavern, sits down at the bar, and orders a double martini on the rocks. After he finishes the drink, he peeks inside his shirt pocket, and then orders the bartender to prepare another double

发表于:2019-02-08 / 阅读(227) / 评论(0) 分类 趣味英语

A abbreviation,absorption,abstract,abundance,acceleration,acceptance, accessory,accommodation, accordance,acquaintance,acquirement,acquisition,adjustment,administration, admiration,admission, adoption

发表于:2019-02-18 / 阅读(179) / 评论(0) 分类 考研英语
学英语单词
-rama
analogises
anomaly in alluvium
Apidae
aquacades
at firstgaze
barbier-mueller
baseband amplifier
biotoxicity
boiler utilization heat
but too true
cash and ticket trolley
cawny
Chebarkul'
chenou
chironomidaes
click on an icon
clompings
coal-gas
comayagua
combination seal
cuff-links
dacking
david souter
dc current transfer ratio
deadish
defined list
dematophora necatrix
deviantize
doebbler
dry spraying
enamel fibers
entire chart
exciter control system
fianl paste impression
fritillariae thunbergii bulbus
Gouyave
gris-
handinhand
hare's-foot bristle fern
hepatargy
Hetaeria biloba
hot frame
hybrid alford
imitation wool
inhonesty
initial proposal
Janus-faced lock
kimmons
Krasnogorskiy
locked cell
longacting oral contraceptive medication
lysianassid
marginal density (function)
mean per unit
mechanical form block
mesonic molecule
micellar enhanced spectrofluorometric method
moving-load
muscularizes
NC (normally closed)
nearest neighbor technique
neocollyris obscurofemorata
no wait run request
on off gage
ookinetes
ophiopogonin
orale
oxy-acetylene cutter
paplaka
pcntylene
peg leg
Pipile
pollutant identification
pro-T cell
probability of complementary events
pseudostratified columnar ciliated epithelium
quadrituberculate
Quiximba
rhinophore
right of option
road-block
salt bath electric furnace
salvage service
sararre
saturatedcalomelelectrod
sector radio marker
sheet wire
social consciousness
squirting
steering worm sector
stock association
strabismuss
suturae plastica
tahosa
technical debt
terror management
towing hawser
turn the screw on
twenty-twenty hindsight
vena thoracoepigastrica
young man