We attended the wedding of an acquaintance's son. Because we did not know the young man or his bride, we decided to send them a practical household gift, a fire extinguisher. Apparently, the couple ma

发表于:2018-12-08 / 阅读(140) / 评论(0) 分类 英汉幽默故事选读

When we change a liquid into vapour, and cool this vapour till it is liquid again, 将水加热成水蒸气, 然后对其进行冷却直至再次液化, we are said to distil the liquid, and the apparatus for doing this is called a still. 这个过程就

发表于:2018-12-18 / 阅读(31) / 评论(0) 分类 英国学生科学读本

Thus by heating liquids we cause them to evaporate, or change into vapours or gases; 因此, 可以看出:我们能够通过加热液体使得它们蒸发, 变成水蒸气或气体; and by taking away heat from these gases, or cooling them, we tu

发表于:2018-12-18 / 阅读(37) / 评论(0) 分类 英国学生科学读本

This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they

发表于:2019-01-08 / 阅读(59) / 评论(0) 分类 Scientific American(四)月

Follow your common sense You cannot hide yourself behind a fairytale forever and ever Only by revealing the hole truth can we disclose The soul of this bulwark forever and ever Forever and ever Indoctrinated minds so very often Contain sick thoughts

发表于:2019-01-10 / 阅读(44) / 评论(0) 分类 英文摇滚歌曲

Lesson 35 Getting up Steam 第35课 蒸汽往上冒! Do you want to know what steam is? Let us get a lump of ice, or a snow-ball, and place it in a saucer in a warm room. It soon melts, and then the saucer is half full of water. If we leave the sau

发表于:2019-02-07 / 阅读(47) / 评论(0) 分类 英国学生科学读本