人工抽样;人工样本

Recording technology has changed a lot over the years, but you can still do one essential thing. You sit in front of a microphone and you tell a story, which here we are again this Friday morning because it's time for StoryCorps. It's an oral history

发表于:2018-12-02 / 阅读(355) / 评论(0) 分类 2007年NPR美国国家公共电台

A: Why are you handing me a plastic cup? B: Your doctor wants to test your urine and needs a sample. A: How am I supposed to do that? B: We need you to urinate like you normally would, and then stop and finish into the cup. A: What am I supposed to d

发表于:2018-12-02 / 阅读(337) / 评论(0) 分类 英语情景对话-健康

[0:0]arithmetic arouse arrange算术 引起,唤起 安排,准备 [0:37.8094]arrest artificial artistic aspect逮捕,拘留 人工的,人造的 艺术的,美术的 方面,面貌 [1:31.0307]assemble assembly assess asset混合,聚集 立法机构,议会 对...估价 人价值的,优点 [2:22.6436]as

发表于:2018-12-05 / 阅读(272) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

[00:05.15]第十三部分 化验取样 [00:10.29]1.The first test is no problem, [00:12.92]做第一项检查没有问题, [00:15.54]but the second one has to be done on an empty stomach. [00:33.78]但第二项目得空腹做. [00:52.01]2.How long do I have to fast? [01:01.04]

发表于:2018-12-05 / 阅读(405) / 评论(0) 分类 医疗服务英语

Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the ene

发表于:2018-12-07 / 阅读(348) / 评论(0) 分类 创新英语

Researchers Create Artificial Skin With Sense of Touch Scientists have recently made considerable gains in creating human-like artificial limbs, but they still look and feel artificial. That could change with a development from South Korea. Researche

发表于:2018-12-16 / 阅读(240) / 评论(0) 分类 VOA标准英语2015年(一月)

A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then

发表于:2018-12-16 / 阅读(286) / 评论(0) 分类 英语情景对话-健康

Unit 7 Where would you like to visit? [00:04.88]SECTION A [00:07.84]1b Listen.Where would San,Gina,and Lydia like to go on vacation? [00:17.71]Why?Fill in the chart. [01:00.55]2a Listen and number these statements in the order that you hear them. [01

发表于:2018-12-17 / 阅读(413) / 评论(0) 分类 新目标初中英语九年级(全一册)

英语口语王 想说就说(五)16

发表于:2018-12-26 / 阅读(307) / 评论(0) 分类 英语口语王-想说就说(五)

星级典句: 第一句:We are pleased to quote you for 1500 dozen men shirts as for the sample you sent before at $20 per piece. 我们愿意按照你方送来的样品提供1500打男士衬衫,每件20美金。? A: We made the offer subject t

发表于:2018-12-26 / 阅读(256) / 评论(0) 分类 天天商务口语

Artificial Muscle Brings Back Blink A study in the Archives of Facial Plastic Surgery reports the development of an artificial muscle system that could restore the ability to blink to stroke and injury patients. Cynthia Graber reports Most of us blin

发表于:2019-01-02 / 阅读(410) / 评论(0) 分类 60秒科学

The undersigned parties hereby agree to form a _____________ (specify type of business entity), in the state of ___________, primarily for the following purposes: ______________ The principal place of

发表于:2019-01-03 / 阅读(296) / 评论(0) 分类 财会英语

关于质量 我们不得不遗憾地向贵公司报告: 贵公司6月29日售给我公司的虾罐头质量太差, 使我们收到不少抗议。 We regret to have to inform you that the tins of lobster which you sold me on 29 June have caused numer

发表于:2019-01-11 / 阅读(334) / 评论(0) 分类 实用英语

Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani

发表于:2019-01-14 / 阅读(344) / 评论(0) 分类 VOA标准英语2011年(四月)

Scientists say they have successfully tested artificial blood vessels grown in the laboratory. In a heart bypass operation, surgeons typically remove a vein from a patient's leg and use it to replace blocked arteries that feed the muscles of the hear

发表于:2019-01-14 / 阅读(295) / 评论(0) 分类 VOA标准英语2011年(二月)

By Melinda Smith Washington, DC 15 February 2008 Obesity is becoming a worldwide problem, even in developing countries. But diet drinks and food prepared with sugar substitutes do not seem to help curb people's appetites. Now a new study may provide

发表于:2019-01-19 / 阅读(305) / 评论(0) 分类 VOA常速英语2008年(二月)

Below you will find a sample outline and the essay written from that outline. OUTLINE Paragraph 1 (Introduction) I. Leading sentence: It took me eighteen years to realize what an extraordinary influence my mother has been on my life. II. Summary of m

发表于:2019-01-20 / 阅读(354) / 评论(0) 分类 实用英语

今天我们要学的词是 artificia。Artificial 人造的。artificial intelligence 人工智能。不久前,The FDA approved a new artificial retina device that would help some people regain part of their sight. 美国食品和药物管理局批准

发表于:2019-01-30 / 阅读(240) / 评论(0) 分类 英语单词荟萃

Artificial Speech Mimics Real Thing 合成声音发展渐入佳境 未来虚拟声音真假难辨 At a University of Arizona laboratory, Professor Brad Story analyzes the voices of singers, actors and public speakers both live and on audio tape. 在亚

发表于:2019-02-12 / 阅读(365) / 评论(0) 分类 VOA标准英语2011年(十一月)

A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then

发表于:2019-02-27 / 阅读(299) / 评论(0) 分类 健康-Health
学英语单词
a carballa
abc-owned
adsurgens
age-proof
alloy diffused phototransistor
anew
anti-coincidence technique
anti-creeper
auto decrement code
bandpass circuit
barium hyposulfate
battlecruiser
Beam Lumens
birdkind
bittencourt
bracing system
ceroplastes floridensis
child prostitution
color-free
competitive capacity
corpus luteum
Cripple Lee seated inincense burner
crowninshields
dead-load stress
defaults for double-clicking
Desentol
devour the course
dihedrals
discommodated
drag calculation
drawing boundaries
ecologo-geographic distribution
ehrlichman
engine man
exothermicity
fannia minutipalpis
finance investment
flared body
frankfurters
frizado
front end compression
full-width dyeing
future simple
gum expander
hanging paper
HTML form
inferential capability
instruction type
interest reversal
intermediate-goods market
Jencks
johano
judgement by confession
juglandaless
kickban
Knudsen, Martin
lacrimal canal
location-plate
make a mush of
make a pause on the brink of a precipice
maritime explorer
McKinsey
Mini DV
moment of span
mulcible
noun adjective
Oceanians
Pageos
palaics
pelletises
pilot controller
pneunatic chipping hammer
practice area buoy
reconstructed coal
reported case
reswallows
Rh incompatibility
roquettes
Sanaga
schoem
Sea of Azov
secteurs
selective volatilization
semi-manufactured goods
sneak
statistical oceanography
storage battery forktruck
straight spike
strip-mining
subcondensation
tethyans
theory of channels and collaterals
top to top
transition probability matrix
ugrandite
ULR
up to the hub
vaginally
welder's clipping hammer
wet embossing
wood-shaving filter
zinc fertilizer