生物安全级别
生物安全等级

Dispute Over Water Levels Along the Missouri River

By Caty Weaver Broadcast: August 1, 2003 This is Steve Ember with the VOA Special English Environment Report. Last month a judge ordered the United States Army Corps of Engineers to begin to lower wat

发表于:2018-12-01 / 阅读(63) / 评论(0)

VOA2003（下）-环境与健康

VOA标准英语2012--Tests Show Levels of Arsenic in US Rice

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(56) / 评论(0)

VOA标准英语2012年(九月)

2015年CRI Shanghai Takes Measures against Rising Sea Levels

Shanghai Takes Measures against Rising Sea Levels Zhang Zhenyu, of the Shanghai Flood Risk Information Center spokesperson, said the seawalls virtually encircle half of the city. These are all the sea walls we have built, including from Hangzhou Bay

发表于:2019-01-19 / 阅读(55) / 评论(0)

2015CRI中国国际广播电台

HEALTH REPORT - PSA Levels and Prostate Cancer

HEALTH REPORT - PSA Levels and Prostate Cancer By Jerilyn Watson Broadcast: Wednesday, June 09, 2004 This is the VOA Special English Health Report. Many older men are tested each year for cancer of th

发表于:2019-01-30 / 阅读(54) / 评论(0)

健康与经济

U.S. finds low levels of radiation in milk

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine（碘） has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai

发表于:2019-02-11 / 阅读(65) / 评论(0)

英语新闻

英闻天下——199 Beijing's Air Pollution Returns to 'Hazardous' Levels

Smog levels in Beijing have hit the 'Hazardous' mark again just 2 weeks after recording one of the worst cases of air pollution. The PM 2.5 monitoring systems in the Chinese capital showed readings of around 400, which is considered hazardous. That's

发表于:2019-02-21 / 阅读(52) / 评论(0)

英闻天下

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accouples

advanced ignition timing

bellum omnium contra omnes

Benzafibrate

bills payable account