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生孩子真的会让你变“老”吗？
20-04-08 Women who give birth may be biologically older than women who dont, a new study suggests. 一项新研究发现，生过孩子的女性在生理上会比那些没有生过的更老。 For the study, the researchers analyzed information from 1,556 US women ages 20 to 44 who took p...
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雨水和云朵
20-04-07 Each of us drinks about three pints of fresh water every day, and we use a great deal of water for washing, for cooking, and for other purposes. Where does all this water come from? In some places we get water from wells, and in other places from ri...
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蝌蚪和青蛙
20-04-07 Children who are fond of country walks, and who use their eyes well, 喜欢在乡村漫步并且善于观察的孩子们 will be sure to notice in early spring little lumps of jelly floating on some pond by the roadside. 一定在早春时分看到过这样的场景：路边的池塘中...
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面粉从何而来? 又是如何制成的呢?
20-04-07 Where did the flour come from, and how was it made? 面粉从何而来? 又是如何制成的呢? There are several kinds of floursuch as oat-flour, barley-flour, rice-flour, and maize-flour or corn-flour. 面粉的种类有很多, 例如燕麦粉、大麦粉、米粉、玉米粉。 But...
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海龟为什么喜欢吃漂浮在海里的塑料制品？
20-03-31 Turtles have an unfortunate habit of devouring plastic objects floating in the sea. 海龟有一个坏习惯，就是吞食漂浮在海里的塑料制品。 These then get snared in their alimentary canals, cannot be broken down by the animals digestive enzymes and may ult...
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海豚是如何睡觉的？
20-03-26 海豚在很多方面都和人类很像。比如说海豚有和人类很像的特殊的呼吸系统，唯一的不同是海豚能不呼吸氧气在水下呆很长时间。但是海豚使如何做到睡觉不溺水呢？ Since Dolphins are like human being in so many ways. For example, dolphins have a special respiratory...
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眼镜的发展历史
20-03-26 Spectacular Inventions 眼镜的发明 When you think about inventions that have radically changed human existence, what comes to mind? Probably the wheel, the printing press, maybe the refrigerator and definitely personal computers. Then there are those...
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意大利---欧洲火山最多，地震最多的国家
20-03-25 No other country in Europe has as many volcanoes as Italy. This is because the Italian peninsula stands on a fault line. Three major volcanoes (Etna, Stromboli, and Vesuvius) have erupted in the last hundred years. 欧洲没有其他国家拥有比意大利更多的...
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袋鼠 Kangaroo
20-03-25 Kangaroos are endemic to the country of Australia. They have large, powerful hind legs, large feet adapted for leaping, a long muscular tail for balance, and a small head. Female kangaroos have a pouch called a marsupium in which joeys complete post...
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海豚的社交行为
20-03-25 海豚被认为是地球上最聪明的动物之一。 Dolphins are often regarded as one of Earths most intelligent animals. They are social creatures, living in pods of up to a dozen individuals. In places with a high abundance of food, pods can merge temporarily,...
