基苯磺酸盐

SSS 2011-08-12

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

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Scientific American(八)月

2006年VOA标准英语-Experts Keep Close Tabs on North Korean Missile

By Kurt Achin Seoul 28 June 2006 World leaders have expressed concern for weeks over the possibility of a North Korean missile test. Beyond satellite images of the missile launch base, however, relatively little is known about Pyongyang's prospectiv

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2006年VOA标准英语（六月）

美国国家公共电台 NPR Justina Machado On Her Quincea?era, Rita Moreno's Abs And 'One Day At A Time'

(SOUNDBITE OF SONG, THIS IS IT) POLLY CUTTER: (Singing) This is it. This is it. ARI SHAPIRO, HOST: In the 1970s and '80s, the TV show One Day At A Time pushed boundaries. It was about a divorced mother raising two teenage daughters in Indianapolis. N

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2017年NPR美国国家公共电台2月

Mondeo, S-Max cars recalled over ABS concerns

BEIJING, March 31 (Xinhua) -- Changan Ford Mazda Automobile Co. Ltd. will recall 62,445 vehicles in China from April 1 due to a problem that could lead to erroneous warnings on the vehicles' dashboard displays that their anti-lock braking systems (AB

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英语新闻

净化室内空气选这些植物就对了！

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(65) / 评论(0)

阅读空间

夏说英语新闻晨读第499期:兔子与绿萝杂交

本期内容： A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(47) / 评论(0)

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