接需氧量

Can Oxygen Be Toxic?氧气有毒吗? In order for us to live we must have oxygen, so how can it be bad for us? Today we explain how oxygen can be toxic. 氧气是我们生存所必需的,所以它怎么会对我们有害呢?今天我们来解释为

发表于:2018-12-28 / 阅读(106) / 评论(0) 分类 初学者听力文摘精选

A: Hi. I'd like to return this radio. B: All right. Do you have the receipt? A: Here it is. B: May I ask why you're returning the radio? A: It does not work very well. B: Would you like to exchange it? A: No. I'd just like a refund. B: Certainly. Thi

发表于:2019-01-07 / 阅读(87) / 评论(0) 分类 购物英语对话

A: I want to return this radio. B: Okay. May I see your receipt? A: Certainly. I have it right here. B: What is the problem with the radio? A: It has poor reception. B: Perhaps you'd like a different one? A: No, thank you. A refund is all I want. B:

发表于:2019-01-07 / 阅读(73) / 评论(0) 分类 购物英语对话

A: I need to return this radio. B: That won't be a problem, as long as you have your receipt. A: Here you go. B: What's the problem? A: It doesn't pick up my favorite station. B: I can exchange it for you. A: Thanks, but I just want a refund. B: A re

发表于:2019-01-07 / 阅读(62) / 评论(0) 分类 购物英语对话

A: I'm returning this radio. B: No problem. You do have your receipt, don't you? A: Here you are. B: What seems to be the problem? A: It doesn't have a headphone jack. B: If you'd like, I can show you a different one. A: No, thanks. A refund will be

发表于:2019-01-07 / 阅读(90) / 评论(0) 分类 购物英语对话

This is Scientific American's Sixty-Second Science. I'm Christopher Intagliata. Got the minute? A couple million years ago, mammoths migrated north from Africa to colonize Eurasia. Sometime around then a massive ice age kicked inand it was stay warm

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(五)月

By Brian Wagner Caracas 07 January 2008 Venezuela has launched a new currency aimed, in part, at curbing high inflation rates in the oil-producing nation. Prices have risen in Venezuela due to soaring consumer demand, creating shortages of milk, suga

发表于:2019-01-09 / 阅读(84) / 评论(0) 分类 VOA标准英语2008年(一月)

Sri Lanka hopes to take advantage of the growing regional demand for information technology graduates. A new training institute opens next year to provide skilled graduates to meet increasing demand. Ron Corben recently visited Colombo and has this

发表于:2019-01-12 / 阅读(105) / 评论(0) 分类 VOA标准英语2008年(九月)

Grab my hand take one step Come with me no regrets 'Coz we'll fly higher than what you can imagine When your heart is mine, anything can happen You're my baby I know you hear this song No need to worry about us You ain't doing nothing wrong Coz latel

发表于:2019-01-14 / 阅读(91) / 评论(0) 分类 节奏布鲁斯

LULU GARCIA-NAVARRO, HOST: It's not every day that scientists announce a new season. But that's what ocean researchers just did on the west coast. They say waters off Oregon, Washington and California now have a whole season when the oxygen level on

发表于:2019-01-17 / 阅读(88) / 评论(0) 分类 2018年NPR美国国家公共电台10月

On June 3rd, a train loaded with highly volatile crude oil derailed just outside the small town of Mosier in Oregons Columbia River Valley. More than 40,000 gallons of crude spilled out of the train. Some burned away in a 14-hour long fire at the sce

发表于:2019-01-17 / 阅读(113) / 评论(0) 分类 2016年Scientific American(十)月

A: Hi. I don't want to keep this radio. B: No problem. May I have your receipt, please? A: Sorry. I could not find it. B: We can't give you a refund without a receipt. A: You know, I bought it at 3 p.m. yesterday. B: I wish I could help you, but it's

发表于:2019-01-20 / 阅读(98) / 评论(0) 分类 购物英语对话

A: Hello. Can I return this radio, please? B: Sure. Do you have your receipt? A: I misplaced it somewhere. B: Unfortunately, I cannot give you a refund without it. A: But I bought it right here just yesterday. B: I'm sorry, but there are no exception

发表于:2019-01-20 / 阅读(78) / 评论(0) 分类 购物英语对话

A: I'd like to return this radio. B: Okay. Do you have your receipt? A: I lost it. B: I am sorry, but you need a receipt for a refund. A: But I purchased it yesterday. B: Perhaps you would like to talk to customer service. A: Well, that's a start, I

发表于:2019-01-20 / 阅读(75) / 评论(0) 分类 购物英语对话

A: I don't want to keep this radio. B: No problem. Let me see your receipt, please. A: Of course. I always keep my receipts. B: Is there a problem with the radio? A: Something is rattling around inside it. B: Would you like a different model? A: No.

发表于:2019-01-20 / 阅读(81) / 评论(0) 分类 购物英语对话

凭借在iTunes和MySpace的成功,来自美国加州的流行女歌手科尔比凯拉特(Colbie Caillat)的处女专辑《Coco》一经发行便得到了很多歌迷的关注。在美国上市第一周,这张《Coco》共售出5万1千张,在本周的Billboard 200专辑榜中跻身前五名. 在没有与唱片公司签订合约之前

发表于:2019-01-23 / 阅读(200) / 评论(0) 分类 音乐咖啡厅

Colbie Caillat-Oxygen I came apart inside a world 我在这个由怒气冲冲的人们组成的 made of angry people 世界里支离破碎 I found a boy who had a dream 直到有一天我遇见一个寻梦的男孩 Making everyone smile 他令他身边

发表于:2019-02-02 / 阅读(75) / 评论(0) 分类 好听的英文歌曲

Oxygen therapy can bring drug-free relief to many Vidushi Sinha | Washington, DC 15 December 2009 A new study shows that breathing pure oxygen can considerably lessen the agony experienced with severe headaches Cluster headaches are described by suff

发表于:2019-02-06 / 阅读(131) / 评论(0) 分类 VOA标准英语2009年(十二月)

Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf

发表于:2019-02-06 / 阅读(153) / 评论(0) 分类 英语新闻

I came apart inside a world 我在这个由怒气冲冲的人们组成的 made of angry people 世界里支离破碎 I found a boy who had a dream 直到有一天我遇见一个寻梦的男孩 Making everyone smile 他令他身边的每个人都能展颜

发表于:2019-02-20 / 阅读(85) / 评论(0) 分类 好听的英文歌曲
学英语单词
above-bed burner
acidopenia
aerothermodynamic parameter of blade
aqueous rust preventive
Assama silk
assassins
automatic feed vacuum filler
beach protection structure
beat the bush
Becke's sign
Bravais, Auguste
BT-cut
Bufo debilis
business-focused
chestnut extract
cirey
come as a surprise to
compact cassette tape
compass signal
computational power
Condrieu
contemplacion
cord test circuit
D-cysteine
delsa
depth of cut
difference between reservoir pressure and saturation pressure
Edelmanian
elastorheodynamic lubricant
eqiaxial
erythrophyll
etamocyline
Evergood, Philip (Philip Blashki)
external harmonics
final stage of acceleration
fixed ratio schedule
flat abrasion test
flatling
fob sb off with
fomm
Frostviken
hamburg parsleys
hang in there
haussmannized
hydrologic survey of glaciers
i-suffred
incisal path
indexing transfer
iodopyridone
jack strop
kicking straps
koryak
kulenovic
LANDesk Client Manager
legal beagle
Linakhamari
lindens
made use
Meas/Vac(live)
melting-point depression
monocoque construction
multi-casing steam turbine
nesosilicate
non-reactive
nonblocking network
onychosophrops holosetosa
oral examinations
overdyed
overhalled
papilloma neuropathicum
placcate
poet shirt
pop off
portable soup
precipitation effectiveness index
pressure units
protolithic
pulse flour
Ramus petrosus
riffle zone
safia
senical
shee-it
shopping carts
slab coil
spur gear set
statllite switching
the FHLMC
through flow
Tres Porteňas
tuft grid tufting
tukey
universal gravitational constants
untreading
urban attraction
uridine diphosphate glucose pyrophosphorylase
visual cloud pictures
vulcanologists
wall-mounted switchboard
well-spents
wing-tail combination
yard operation