国外媒体资讯
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[时差N小时] 时差N小时:为何孕妇需要远离交通繁忙区域?(下)
It’s not clear why, exactly, heavy traffic could cause premature birth. Air pollution from car exhaust could have something to do with it. Some studies have found that women exposed to high lev2011-12-19 编辑:beck 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(26)
一般人诊断出胰腺癌2011-12-16 编辑:mike 标签:
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[自然百科] 自然百科:平行宇宙(4)
超弦理论是如此具有煽动性并且又带着几分神秘感2011-12-16 编辑:mike 标签:
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[时差N小时] 时差N小时:为何孕妇需要远离交通繁忙区域?(上)
Ideally, pregnant women should do everything they can to have a full term pregnancy, because babies born even a few weeks early risk being less healthy and possibly suffering from long term disabilit2011-12-16 编辑:beck 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(25)
If you havn't found yet, keep looking and don't settle, as was all matters of the heart you konw you will find it.[qh]如果你还没有找到,那就继续找,不要气馁,如果你全心全力,你知道你会找到的。[qh2011-12-15 编辑:mike 标签:
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[自然百科] 自然百科:大迁徙之繁衍生息(16)
Tonight the newly winged young would join the feeding frenzy.They are now fully fledged members of the colony,ready to investigate the bounty of this land,and dark in the dusk with breathtaking numbe2011-12-15 编辑:mike 标签:
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[时差N小时] 时差N小时:风力发电机(下)
Turbines with one or two blades are actually even more efficient. But because they’re also lighter and tend to spin faster, they’re also noisier. These designs also require a special tilt2011-12-15 编辑:beck 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(24)
却逐渐淡出了人们的视野2011-12-14 编辑:mike 标签:
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[自然百科] 自然百科:大迁徙之繁衍生息(15)
Especially for the inexperienced young.Some freshwater crocs try to snap them in the air.Others wait for fatal mistakes.But many more make it through.And after many hours on the wing,they find their2011-12-14 编辑:mike 标签:
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[时差N小时] 时差N小时:风力发电机(上)
If you’ve ever driven by a wind farm, you may have noticed that the turbines most likely have three blades. Not two, not five, but three. Now, you may think that if the point of a wind turbine2011-12-14 编辑:beck 标签:
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[自然百科] 自然百科:大迁徙之繁衍生息(14)
Everywhere the cliffs are scarred by penguin claws.They are irrepressible and undaunted by missteps and stumbles.[qh]岩壁上到处都是被企鹅爪子挠过的痕迹。虽然磕磕绊绊,步履蹒跚,但它们不可阻挡,不屈不挠2011-12-13 编辑:mike 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(23)
And how about all those apple retail stores?[qh]那些苹果的零售店如何呢?[qh]Irresistible heaven where people can touch and feel everything and can even take a seat at the genius bar to solve their pro2011-12-13 编辑:mike 标签:
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[时差N小时] 时差N小时:为什么马的腿很细?(下)
Then that foot stops and the other one accelerates. And so on. Thinner, lighter things are easier to accelerate than heavy, massive ones. So if you want speed, put the muscles up high and the skinny2011-12-13 编辑:beck 标签:
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[自然百科] 自然百科:平行宇宙(3)
在英国,著名物理学家2011-12-12 编辑:mike 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(22)
乔布斯代表着苹果2011-12-12 编辑:mike 标签:
英语听力资料下载
频道本月排行
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向男性避孕药更进一步(上)
在更衣室中细致谈论各种避孕方式,以及这些避孕方式优缺点的频率有多高?[ -
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向男性避孕药更进一步(下)
碳酸氢盐的浓度在不同组织中变化不大,但有一个明显的例外。 - 3
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