日期：2020-04-08 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... 阅读全文>>

日期：2020-04-07 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... 阅读全文>>

日期：2020-04-07 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... 阅读全文>>

日期：2020-04-07 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... 阅读全文>>

日期：2020-03-31 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... 阅读全文>>

日期：2020-03-26 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... 阅读全文>>

日期：2020-03-26 Sugar On The Brain 大脑中的糖 Its long been understood that there is a connection between memory problems and diabetes, a disorder characterized by excessively high blood sugar. Sugar provides the body with fuel for various processes, including memo... 阅读全文>>

日期：2020-03-26 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... 阅读全文>>

日期：2020-03-26 煮一杯咖啡并不难。但一项新的研究表明，拥有数学和分析化学背景对煮咖啡并没有坏处。因为研究人员将他们在材料科学和建模方面的技能应用到煮意式浓缩咖啡上，有了一个突破性的发现:与人们普遍认为的相反，用更少的豆子和更粗糙的研磨会让你得到更好的效果。他们的研究... 阅读全文>>

日期：2020-03-25 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... 阅读全文>>

日期：2020-03-25 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,... 阅读全文>>

日期：2020-03-23 When it comes to physical health, mountains of evidence will tell you that a healthy diet is important. 谈到身体健康时，大量证据会告诉你健康饮食很重要。 And it is. 而且确实是这样的。 But a growing body of research is showing that diet is important f... 阅读全文>>

日期：2020-03-19 Dolphins are marine mammals closely related to whales and porpoises. The name is originally from Greek (delphus), meaning womb. The animals name can therefore be interpreted as meaning a fish with a womb. Along with whales and porpoises, dolphins ar... 阅读全文>>

日期：2020-03-18 很多人都分不清tortoise和turtle。 Many people are confused by the words tortoise and turtle. This is partly due to regional differences. In British English, turtles and tortoises are two different hard-shelled, egg-laying reptiles. The main difference... 阅读全文>>

日期：2020-03-18 亚历山大格拉汉姆贝尔更喜欢用 Ahoy而不是Hello After the telephone was invented, people needed some instructions on how to use it. One concern was how to begin a conversation on this device. Instead of Are you here? or Are you ready to talk? Alexander... 阅读全文>>

日期：2020-03-18 关于一年的定义是一个星球围绕太阳旋转一周需要的时间。而一天是这个星球自转一周所需要的时间。 The scientific definition of a year is the amount of time it takes for a planet to make one revolution around the Sun. Earths neighbouring planet, Venus, takes... 阅读全文>>

日期：2020-03-18 鲸鱼油除了被当做太平洋西北部土著人的主要食物之外还有很多其他用途，你知道吗？ Whale oil, also referred to as train oil, is oil produced from whales. It was a major food of the aboriginal peoples of the Pacific northwest, such as the Nootka but it was... 阅读全文>>

日期：2020-03-17 鲸鱼是哺乳动物，因此在很多方面它们和人类很像。最重要的区别是鲸鱼和人类的生活环境不同。那么鲸鱼睡觉吗？鲸鱼是如何睡觉的的呢？ Whales are mammals, so in many ways, they are just like human beings. The most important difference is that humans and whale... 阅读全文>>

日期：2020-03-12 鲸鱼不是鱼，而是整个一生都生活在水里的哺乳动物。 Whale is the common name for various marine mammals of the order Cetacea. Whales breathe air and are not fish. They are mammals that spend their entire lives in the water. Whales are of two types: too... 阅读全文>>

日期：2020-03-09 狮子是现在仅存的群居的野生猫科动物。 Lions are the only social wild cats. They live in family groups called prides, which are made up of as many as 12 females and their young, and up to three adult males. Most lions are found in Africa, but small po... 阅读全文>>