血氧饱和度50%时氧分压

(woman) Thank you. It's great to see so many of you interested in this series on Survival in Outer Space. Please excuse the cameras - we're being videotaped for the local TV stations. Tonight I'm going to talk about the most basic aspect of survival

发表于:2018-12-05 / 阅读(172) / 评论(0) 分类 托福听力短文

What Causes Altitude Sickness? Anyone who has vacationed in the higher elevations of Colorado, such as Vail and Estes Park, will tell you altitude sickness can be a real problem. Loss of appetite, nausea, vomiting, weakness, dizziness, and difficulty

发表于:2018-12-05 / 阅读(165) / 评论(0) 分类 英语听力文摘 English Digest

Module 4 Travel Unit 10 Where are you going on holiday? fantastic 了不起的 get(to) 到达 by 乘坐(...交通工具) Hong Kong 香港 super 超级的;好极了 train 火车 leave for 出发前往;离开去 half 半 past 超过 half past seven 七点

发表于:2018-12-13 / 阅读(172) / 评论(0) 分类 广州小学五年级 (上) 课本(2003)

Anyone who has vacationed in the higher elevations of Colorado, such as Vail and Estes Park, will tell you altitude sickness can be a real problem. Loss of appetite, nausea, vomiting, weakness, dizziness, and difficulty sleeping can plague those visi

发表于:2018-12-18 / 阅读(153) / 评论(0) 分类 2018年NPR美国国家公共电台2月

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 or die. So their tails and heat-shedding ears shrunk, and they grew thick coats of oily fur. But

发表于:2019-01-02 / 阅读(195) / 评论(0) 分类 60秒科学

Cocaine 可卡因 Cocculine 衡州乌药灵 Coclaurine 乌药碱 Codeine 可待因 Codonopsis P.E. 党参提取物 Colchicine 秋水仙碱 Columbin 古伦宾 Common cnidium fruit P.E 蛇床子提取物

发表于:2019-01-03 / 阅读(168) / 评论(0) 分类 医务英语

EXPLORATIONS -April 3, 2002: Spacesuit History By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell a

发表于:2019-01-04 / 阅读(203) / 评论(0) 分类 Explorations

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(182) / 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. It sounds either really crazy, or kind of obvious. But according to new research, pick-up soccer could help homeless men avert the risk of an early dea

发表于:2019-01-08 / 阅读(159) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? When it came to surviving freezing weather, mammoths relied on more than their woolly coats: even their blood was specially adapted to let them thrive in chilly clime

发表于:2019-01-08 / 阅读(206) / 评论(0) 分类 Scientific American(九)月

VT tidal volume 潮气容积 TLC total lung capacity 肺总量 VC vital capacity 肺活量 IC inspiratory capacity 深吸气量 ERC expiratory reserve capacity 补呼吸量 RV residual volume 残气容积 FRC functional residual capacity 功能残气量

发表于:2019-01-08 / 阅读(172) / 评论(0) 分类 医学英语

EXPLORATIONS - The Evolution of Spacesuits STEVE EMBER: Im Steve Ember. SHIRLEY GRIFFITH: And Im Shirley Griffith with the VOA Special English program EXPLORATIONS. Today we tell about the special clothes astronauts wear that protect them while they

发表于:2019-01-12 / 阅读(135) / 评论(0) 分类 2011年VOA慢速英语(四)月

By David McAlary Washington 16 May 2006 Long distance air travel can increase the risk of blood clots in the legs, a potentially fatal condition that has been known for more than half a century. Now B

发表于:2019-01-19 / 阅读(187) / 评论(0) 分类 2006年VOA标准英语(五月)

JUDY WOODRUFF: Now the questions surrounding a research trial with newborn babies that allegedly didn't provide adequate disclosure to parents. The trial involved 1,300 infants at 23 hospitals who were born extremely prematurely between 2004 and 2009

发表于:2019-01-27 / 阅读(129) / 评论(0) 分类 PBS访谈健康系列

Inter beat Catania to maintain pressure on Juventus ROME, Oct. 21 (Xinhua) -- Inter beat Catania 2-0 at home on Sunday to keep in touch with Italian Serie A pacesetters Juventus. Inter went ahead in the 28th minute when Antonio Cassano converted from

发表于:2019-02-07 / 阅读(196) / 评论(0) 分类 英语新闻

Barca cruise home in Vallecas to pressure Real and Atletico MADRID, Oct. 27 (Xinhua) -- FC Barcelona moved 11 points clear of Real Madrid and three ahead of Atletico Madrid after a 5-0 win away to Rayo Vallecano in the Spanish Primera Liga on Saturda

发表于:2019-02-07 / 阅读(192) / 评论(0) 分类 英语新闻

Amoment of crime scene investigation Ya?l: Hi Don, what are you... Don: Shh! I'm watching my favorite TV police drama: Crime Lab! Y: Oh, cool. Hey, what's that guy doing? D: Y'know Ya?l, you do have the right to remain silent... Y: Why is he spraying

发表于:2019-02-15 / 阅读(167) / 评论(0) 分类 英语时差8,16

Yael is worried about having enough air to breathe, but Don sets her mind at ease. Y: Oh great! This weekend I have to go to another family reunion, where I'll be sharing a room with my seven-foot-tall body-building cousin Bertha. She's nice enough,

发表于:2019-02-23 / 阅读(121) / 评论(0) 分类 英语时差8,16

Air is deceptive stuff. Even at sea level, we tend to think of the air as being ethereal and all but weightless. In fact, it has plenty of bulk, and that bulk often exerts itself. As a marine scientist named Wyville Thomson wrote more than a century

发表于:2019-02-25 / 阅读(158) / 评论(0) 分类 万物简史

The vampire is the stuff of the great horror stories. However, a recent textbook by geneticist John Jenkins suggests that Bram Stokers legend of the vampire, Dracula, may have had its basis in a very real disease that prevents some people from gettin

发表于:2019-03-06 / 阅读(274) / 评论(0) 分类 英语时差8,16
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