单词：hazards generated by vibration
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There are many different kinds of sites. We often speak of construction sites, a site where something is being built such as buildings, roads, bridges, airports, and so on. But a site can also be a completed structure, like a factory or even sometime
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We are here on Seal Island, off the coast of Maine, to observe the heroic track of one baby puffin to the sea. In order to do that, we'll have to use special infrared video because the track will begin at night. Just because this young puffin is maki
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid
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从下个月起，凡是违犯职业危害法规的中国企业和工厂将被强制关闭，并处以最高额为 30 万元的罚款。 请看《中国日报》的报道： If an employee's health has been affected by dust, toxic substances and othe
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AS IT IS 2015-03-19 How Should the World Protect Itself from Natural Disasters? 世界应该怎样保护自己免受自然灾害? How should the world protect itself from natural disasters and climate change? And who should be paying for this kind of
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The language were going to study in this episode will be useful for anyone who needs to host visitors. No matter whether we are giving journalists a demonstration of a factory, or introducing potential customers to our work site, or giving government
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雪莉的同事得了颈椎病，听说做按摩效果不错，雪莉也想试一试了。她还提出上班族都该注意身体健康。上班族到底该怎么样保持健康呢？ Listen Read Learn Colleague: Oh, I've got a pain in my neck. Shirley: You'd better take a break. Colleague: I saw my doctor la
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今天我们要学的词是impair。 Impair是损害、损伤的意思。一项最新研究建议美国军方全面禁止吸烟。According to the study, tobacco use impairs military readiness in the short term, 研究显示，吸食烟草短期内有损
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今天我们要学的词是hazard。 Hazard, 是危害，危险的意思。混合动力车虽然有利于环保，但是低速行驶时几乎没有声音，对盲人的安全构成威胁， Hybrid vehicles pose a safety hazard for the blind. 最近，有
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BEIJING, Aug. 8 (Xinhua) -- A total of 46,653 fires broke out in China in the first seven months of the year, leaving 399 people dead and another 258 injured, the Ministry of Public Security said Wednesday. The number of fires and the death toll saw
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Housekeeping is crucial to safe workplaces. It can help prevent injuries and improve productivity and morale. 打扫卫生对工作场所的安全至关重要，它有助于预防受伤，提高生产力，提振士气。 The practice extends from tr
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本期内容： For the first time a computer beat a world champion at the Asian board game of Go. Googles DeepMind AlphaGo defeated Lee Se-dol of South Korea in the first two encounters of a best-of-five series. The third game is due to take place t
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