放大系数倒数

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头,盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(82) / 评论(0) 分类 美丽新世界

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-10 / 阅读(237) / 评论(0) 分类 大学四级4000单词速记动画版

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(79) / 评论(0) 分类 2013年VOA慢速英语(二)月

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(77) / 评论(0) 分类 中英双语新闻

图片1 图片2 by Jason Marshall Do you frequently find yourself at restaurants with friends fumbling to figure out how to split the bill and calculate the tip? Have you ever resorted to seeking advice from your smart phone? Dont worry, we all have.

发表于:2019-01-02 / 阅读(179) / 评论(0) 分类 数学英语

In my lab, we recently made a cancer nanodetector 在我的实验室,我们最近研制出了一种癌症纳米检测器, that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(93) / 评论(0) 分类 TED演讲科学篇

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(95) / 评论(0) 分类 Scientific American(三)月

NBA legend Dikembe Mutombo of Congo coaches a young Special Olympics athlete during a Basketball Without Borders community event in Dakar, Senegal, 5 Aug 2010 The National Basketball Association's Basketball Without Borders Africa program this year b

发表于:2019-01-13 / 阅读(79) / 评论(0) 分类 VOA标准英语2010年(八)月

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(73) / 评论(0) 分类 TED演讲国际问题篇

Now, our inherent wisdom doesn't have to be insider's knowledge. Kids already do a lot of learning from adults, and we have a lot to share. 我们先天的智慧,堪比内行人的知识。小孩已经从大人身上学到许多,而我们也有很多

发表于:2019-01-21 / 阅读(73) / 评论(0) 分类 TED演讲教育篇

Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the science of the future to eve

发表于:2019-01-24 / 阅读(120) / 评论(0) 分类 英语语言学习

今天我们要学的词是 reciprocal. Reciprocal 作为形容词,有互惠的意思。U.S. President Donald Trump emphasized in his Davos speech that the United States supports free trade, but it needs to be fair and reciprocal. 美国总统川普在

发表于:2019-01-26 / 阅读(90) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是WOW factor。 A WOW factor, 指让人惊叹的东西。经济不景气,也影响到了玩具行业。从二月中旬开幕的美国国际玩具展可以看出, In 2009, there will still be toys with the WOW factor, but

发表于:2019-01-30 / 阅读(111) / 评论(0) 分类 英语单词荟萃

reciprocal basis 互惠原则 reciprocal duty 互惠关税 reciprocity 互惠措施;互惠条件 recision of contract 撤销合约 recognizance 签保;担保 recognized clearing house 认可结算所

发表于:2019-02-01 / 阅读(82) / 评论(0) 分类 财会英语

巧妙拒绝别人 Explore the possibility of a reciprocal favor 探索互惠互利的可能性 This will help the requester understand the impact of the request, and potentially reconsider. In other cases, you may actually get back more than you giv

发表于:2019-02-16 / 阅读(64) / 评论(0) 分类 英语听力广播—Listening

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(103) / 评论(0) 分类 双语有声阅读

发表于:2019-02-25 / 阅读(106) / 评论(0) 分类 考研英语

Jo: This is Real English from BBC Learning English. Im Jo. Jean: And Im Jean. Jo: Today were going to look at words and phrases that have recently become part of the English language. Jean: 在我们的《地道英语》节目当中,我们会带领大家一起来学习和熟

发表于:2019-02-26 / 阅读(363) / 评论(0) 分类 地道英语在线听

We have had some quite serious podcasts recently, so here for a change is some complete nonsense. Early in the morning in the middle of the night, Two dead boys got up to fight. Back to back they faced each other Drew their swords and shot each other

发表于:2019-03-01 / 阅读(137) / 评论(0) 分类 听播客学英语
学英语单词
active manager
Alpha-Laurionite
alpha-naphthols
aluminium gallium indium nitride
anion precipitant
aquabases
Aquifex
auric azide
balancd armature
balance sheet of national economy
Ban Lamduan
batteling
binary digit(bit)
bretherens
bridle wrist
burnt down by fire
buryingplace
Calliopsis
Chaplygin
cleaning rubber
coiled-cooling pipe
colonsay
conveying disk
cornstarches
daystone
dendraspiss
did you
digital detector
directing
easing out line
East Hartland
ethyl xanthogen disulfide
European flatfish
firepans
flower petals
frisch grid chamber
gas bleed
genus Polianthes
GME-NAC
goggans
gravelwalk
great number
ground-air radio frequency
guignardia laricina(sawada)yamamoto et k. ito
gum formation
hadjipapas
hot surface-ignition engine
human-flesh searches
intermediate superheating
intermediate trade
ionized layer
Jakobson
Jebb.
Kochpāra
label expression
langridges
lapel microphone
leafstalk
loungier
Manutius, Aldus
medultoblastoma
METARs
methyl mercaptan
mid-ocean ridge-rift system
migale
mirror
modelling paste
modify structure
Morro, Pta.dos
Namibia
natar
North Reef I.
oligo-cellulose
opening hours
paracetanol
pengitoxin
pheophorbin
polyoxyalkylene glycol
probable velocity
prothalamium
psilotum nudums
receive a petition
reductionisms
Rothschild I.
Samate
Satkūnai
selenographers
semi-synthetic fiber
shrinkage tear
smoothshade
succorrhea
super-audio
swinging door
symphylas
things with defects
trainee solicitor
two-conductor shielded cable
uniform current
unknightly
viscosimetries
white hake
wood treatment