单词:packed extration column
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63 生长于盐水中的西红柿问世 AGRICULTURE REPORT September 4, 2001: Salt-Resistant TomatoBy George Grow (Start at 1'03
Health Report - People With Chronic Hepatitis B Often Do Not Know It 健康报道 - 乙肝的传播和防治 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 Today we answer a question. Vu Quang Hien fro
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by Mignon Fogarty Today we'll discuss words you should never use and words you should always avoid--or something like that. As many of you know, before I was Grammar Girl, I was a science and technology writer. Even as an undergraduate, my instructor
ROBERT SIEGEL, HOST: The near-daily stream of revelations of sexual harassment has become a cultural crisis. So we asked one of our cultural correspondents to think about the place where many of these incidents seem to happen - the workplace, where p
This is the VOA Special English Health Report. A new study suggests that early exposure to germs strengthens the immune system. That means letting children get a little dirty might be good for their health later in life. The study involved laboratory