单词:biokarst
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Discordance about a secretary A: Hello, Mr. Kramer. Could you spare a minute? B: Thats about all I can spare, Karen. What do you need? A: I need to talk to you about that new secretary youve hired. I think Im going to have some problems working with
蒋健棠听说学英语 Chapter16:The wildlife biologist
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By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode
黄龙奇观 A View of Huanglong 在四川西部,有一美妙的去处。它背倚峨山宇峰雪宝顶,树木苍翠,花香袭人,鸟声婉转,流水潺潺。这就是松潘县的黄龙。 One of Sichuan's finest scenic spots is Huanglong (
俄罗斯莫斯科的一位生物能量学教授近日宣布,他已研制出一种能够有效延缓衰老的不老药,并有望于几年内上架销售。这位科学家用40年的时间研制出一种抗氧化剂,能够有效抑制氧分子对人