日期:2020-04-21 袋鼠在澳大利亚很常见的动物。它们有强有力的后腿,大大的脚更适合跳跃,还有一条长长的尾巴保持平衡,以及一个比较小的头。 Kangaroos are endemic to the country of Australia. They have large, powerful hind legs, large feet adapted for leaping, a long muscu... 阅读全文>>

日期:2020-04-21 The earth-worm is also called the dew-worm, because it likes to come out of its hole and creep about when the grass is wet with dew. It is a very long and thin animal, being often a foot long, yet less than one-quarter of an inch in thickness. 蚯蚓... 阅读全文>>

日期:2020-04-20 We use this every day as a stand-in for love and the human heart, but it doesnt really look like the real thing. 我们每天都用这个符号代表爱以及人类的心脏,但这符号和真正心脏的模样其实有点差距。 Zachary Crockett at Priceonomics has looked into the hi... 阅读全文>>

日期:2020-04-14 每个孩子都喜欢喝鲜牛奶。那香浓的味道,甜美的滋味是多么诱人!对于这样一种极为有用的饮品,你肯定想要了解更多吧? 我们喝的牛奶几乎全部来自奶牛的乳房。不过,人们还饮用其他动物的奶,例如羊、驴以及骆驼。 Every child likes to drink new milk. How pleasant it... 阅读全文>>

日期:2020-04-14 假如你买了一些塑料制品,上面标明可生物降解。那你就可以放心了,因为你知道将它扔掉后它会无害降解。嗯,不要太快下结论。 当我们从适合垃圾填埋场的特性这一角度考虑生物降解能力时,会发现它并不是理想的材料属性。原因是,我们在设计生物降解能力时,通常会追求快... 阅读全文>>

日期:2020-04-13 研究人员认为,他们已揭开了狗狗鼻子周围的秘密,解释了为什么狗狗们的鼻子如此冰凉。 Researchers believe they have solved one of sciences greatest mysteries. They think they have found out why a dogs nose is cold. Scientists from universities in Sweden... 阅读全文>>

日期:2020-04-13 Snakes are elongated, legless, carnivorous reptiles that can be distinguished from legless lizards by their lack of eyelids and external ears. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to... 阅读全文>>

日期:2020-04-08 Elephants are large mammals of the family Elephantidae and the order Proboscidea. Traditionally, two species are recognized, the African elephant and the Asian elephant, although some evidence suggests that African bush elephants and African forest... 阅读全文>>

日期:2020-04-08 The oak is one of the finest and most useful of all our forest trees. 在所有森林树种之中, 橡树是最为优良、最为有用的一种树木。 Its height sometimes exceeds sixty feet, while the girth, or distance round the trunk, is often more than twenty feet. 它... 阅读全文>>

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>>

  • 首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 下一页
  • 末页
  • 3597177
  • 梧州患该化妆品有限公司