石棉小体

SSS 2011-09-21

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Asbestos increases the risk for certain cancers. The fibers are thought to do so by skewering cells, setting off chemical reactions that lead to inflammation,

发表于:2018-12-24 / 阅读(69) / 评论(0)

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美国学生世界地理教材第144期:装面包的篮子—粮仓(2)

At the city of Baku on the side of the Caspian Sea there are so many oil-wells and so much oil that it seems to get into everything. 在里海边的巴库城有很多很多油田，出产大量的石油，似乎什么东西都沾上了石油。 You s

发表于:2018-12-28 / 阅读(54) / 评论(0)

美国学生世界地理教材

VOA标准英语2010年-Californians Debate Fate of Official S

California has an official animal, the grizzly bear, and a state bird, the California quail. It has an official grass, purple needle grass, and a state reptile, the desert tortoise. It even has an official song, a century-old tune called I Love You,

发表于:2019-01-13 / 阅读(60) / 评论(0)

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澳洲新闻 (ABC新闻快递) 2014-11-04

Let's have a look at what's leading on our News today: And more than 100,000 people are expected to pack Flemington Racecourse for today's running of the Melbourne Cup. This year's cup is likely to be dominated by international runners with 11 overse

发表于:2019-01-19 / 阅读(40) / 评论(0)

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新西兰英语 608 Demolition Rubble

Each day, millions of tonnes of rubble go by truck to Bottle Lake Forest in Christchurch. Demolition companies are working seven days a week to demolish buildings in the CBD after the earthquakes caused so much damage. Cranes, bulldozers, excavators,

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澳洲新闻 (ABC新闻快递) 2013-05-31

NBN Chief Mike Quigley is calling for calm over an asbestos scare of some of its roll-out sites. Several sites in New South Wales, Victoria and WA have been shut down. Telstra is hiring an extra 200 safety specialists to inspect all asbestos-related

发表于:2019-02-14 / 阅读(41) / 评论(0)

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a tool

absorbable gelatin film

air to surface missile

air-mobile

aluminium (tri)acetate

Bacillus losantitichii