铯蒸汽阴极

Windflowers, windflowers [00:02.43]风飞花,风飞花 [00:04.86]My father told me not to go near them [00:07.46]父亲对我说别走近它 [00:10.06]He said he feared them always [00:11.49]他说他总有些害怕 [00:12.93]And he told me that th

发表于:2018-11-28 / 阅读(142) / 评论(0) 分类 零距离李阳疯狂英语口语

useless 无用的,没有价值的 user 用户,使用者 usual 通常的,平常的 usually 通常 utility 效用,实用 utilise 实用 utilize 利用 utmost 极度的,极端的,极限 utter 完全的,彻底的说 vacant 空闲的,空缺的

发表于:2018-12-01 / 阅读(120) / 评论(0) 分类 大学英语四级词汇拼读版

The United Nations Climate Summit takes place next week in Poland. About 20,000 people from 190 countries are expected to take part in the conference. There, world leaders will debate how to limit climate change -- the weather events linked to slowly

发表于:2018-12-14 / 阅读(88) / 评论(0) 分类 2018年VOA慢速英语(十一)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute? For accurate weather forecasting and climate analysis, researchers need the best models possible about how the air circulates above the earth. And a new study is challe

发表于:2018-12-24 / 阅读(103) / 评论(0) 分类 Scientific American(八)月

[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon

发表于:2018-12-26 / 阅读(77) / 评论(0) 分类 美国英语听力80篇

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(八)月

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(114) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(135) / 评论(0) 分类 Scientific American(四)月

I'll take what you got got got I know it's not a lot lot lot Cause I just need another hit You're the thing that I can't quit You got what I want want want Here and then you're gone gone gone If you told me that we were through You know that I would

发表于:2019-01-10 / 阅读(96) / 评论(0) 分类 英文摇滚歌曲

电子香烟惹争议 Should electronic cigarettes be a new option for smokers trying to kick the habit? Reactions from Americans are mixed. More than half of people questioned in a poll think electronic cigarettes should be regulated by the US Food

发表于:2019-02-05 / 阅读(85) / 评论(0) 分类 实用英语

科学家估计,如果不减少二氧化碳排放,2100年地球平均气温将至少上升4摄氏度,到2200年会上升8摄氏度,无疑是地球灾难性的噩梦。 此前有科学家用气候模型分析称,全球气温将受二氧化碳排

发表于:2019-02-06 / 阅读(73) / 评论(0) 分类 阅读空间

Forget flip flops and sun tan lotion, it's coffee and ketchup that holidaymakers consider their packing essentials, according to a new study. 一项最新研究显示,度假行李中的必备物品根本不是人字拖和防晒霜,而是咖啡和番

发表于:2019-02-09 / 阅读(66) / 评论(0) 分类 阅读空间

BEIJING, Oct. 21 (Xinhuanet) -- A team of European researchers announced that they have found vast water vapor out of our solar system, according to a study in the U.S. journal Science Friday. Using Herschel Space Observatory, a European Space Agency

发表于:2019-02-09 / 阅读(112) / 评论(0) 分类 英语新闻

Man, born of woman, is of a few days, and full of trouble; 人从呱呱落地,只是短暂的几天,麻烦不断; He cometh forth as a flower, and is cut down; 他初如鲜花哪堪折; He fleeth also as a shadow, 像影子一样循去, And

发表于:2019-02-11 / 阅读(81) / 评论(0) 分类 美国语文第六册

What the Student Say in Science Classes 自然科学课上学生们都说了什么 The following quotations were gleaned from classroom discussions in 5th and 6th grade science classes. 下面的这些话都是从五六年级的自然科学课的课堂

发表于:2019-02-17 / 阅读(101) / 评论(0) 分类 英语小达人

There are 320 million cubic miles of water on Earth and that is all we're ever going to get. 地球上有13亿立方公里水,这是全部。 The system is closed: practically speaking, nothing can be added or subtracted. 系统已经关闭,说得明

发表于:2019-02-25 / 阅读(109) / 评论(0) 分类 万物简史

I know not that any other author has hinted of the matter; 我不知道是否有其他作家提及此事, but by inference it seems to me that the sturgeon must be divided in the same way as the whale, 不过据我推断,鲟鱼也一定是按大鲸

发表于:2019-02-25 / 阅读(98) / 评论(0) 分类 白鲸记

For d'ye see, rainbows do not visit the clear air; they only irradiate vapor. 因为,你知道,晴朗的天气决不会有虹彩;虹彩是专为照耀雾气才出来的。 And so, through all the thick mists of the dim doubts in my mind, 因此,

发表于:2019-02-25 / 阅读(87) / 评论(0) 分类 白鲸记

Surmounting Life's Obstacles - Do You Cling to What You Were Before? 跨越生命中的障碍 您还坚持原来的样子吗? A little stream flowed down from a high mountain far, far away through many villages and forests, until it reached a desert.

发表于:2019-03-03 / 阅读(168) / 评论(0) 分类 英语美文

He was going on with some wild reminiscences about his tomahawk-pipe which, it seemed, had in its two uses both brained his foes and soothed his soul, 他是在对他那烟斗斧发狂思,那东西,在我们直接注意这个熟睡的索匠的时候,好

发表于:2019-03-10 / 阅读(150) / 评论(0) 分类 白鲸记
学英语单词
alar cardiac muscle
Alpha Process
amount of coal-derived gas
area of heavy rainfull
associative case
ballgirl
bassie
boluss
boswellism
burning behaviour
camber bowl
carbon filament atomiser
coal porosity
comparesone
concenptus
contact voltage regulator
corporate-fraud
curvature of a conic
de-aspirate
defform
dehydropregnenolone acetate
destructive read only
Dycas scale
Ecncapsulation
electric violinist
electronystagmography
entwistles
etebenecid
exit pupil
faceharden
finnan haddock
fish for compliments
Fittig reaction
Flacian
garlandage
general case
genus tropidoclonions
GI party
Gondwana-flora
humic-type cracking gas
HVJ
hydraulic grade
ikcnnikoside
interface region
investment timing
isolated base
Japanese Marine Association
jinjili
JTLM
karaca dag
kisky
lightwood
long spatula
lubrication angle
luu
mama-sans
masone
material radioactives
micturition
money-spinning
mt. rushmores
mulberry fibre
Naguree
nidulariaceous
Nogent-sur-Oise
non-homogenerous differential equation
P-agglutiongen
pair of pincers
paralysin
physical link layer
posterodorsal
precooking
radiosonde station
rag-and-bone shop
remote terminal console
Reppe reactions
roasting space
roeung (cambodia)
rovello
schwne
scoured waste silk
sexual stage
single slip switches
sino-foreign
solid fibreboard
spaghetti models
speculation in securities
sprogget
stagewear
staggered bond
stree
strund wire bond
syndactyl
Syntestrin
tautologises
teamkills
therapeutic shock
thermal insulated trailer
timbrelist
tip the ball too early
training reactor
undersize sieve