英国学生科学读本 第89期:云和雨(2)

Every day the sun's rays change thousands of tons of liquid water into water-vapour; 每天, 太阳光都能够将数千吨的液态水转化为水蒸气； and this water-vapour mingles with the air, and is carried along by the wind. 随后, 水蒸气

英国学生科学读本 第89期:云和雨(1)

Lesson 89 Clouds And Rain 第89课 云和雨 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. 我们每个人每一天都会饮用3品脱左右的淡水, 而

英国学生科学读本 第88期:冷凝(3)

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

英国学生科学读本 第91期:牛奶及用途(2)

Soon all the little balls of cream have their skins or coats broken, and then the tiny pieces of milk-fat inside them stick together and make a lump of yellow butter. 很快, 奶油小球的外膜破碎, 里面的乳脂颗粒则会黏在一起成为一

英国学生科学读本 第95期:面粉与面包(3)

Of what use is flour? Every child knows that it is made into bread and puddings and pastry. 面粉有什么用处呢? 孩子们都知道, 面粉可以用来制作面包、布丁与糕点。 To make bread, we must mix the flour with some water, to whi

英国学生科学读本 第95期:面粉与面包(2)

This powder has to be sifted, to separate the husks from the flour. 然后, 人们利用筛子将面粉与外皮分离。 The husks are hard and coarse, and they would not be good food for us, for we could not digest them. 外皮坚硬且粗糙, 我们

英国学生科学读本 第95期:面粉与面包(1)

Lesson 95 Flour And Bread 第95课 面粉与面包 Let us buy a pound of flour at the baker's. 我们去面包房买上一磅面粉。 The baker will give us the flour in a nice paper bag, and it will only cost about twopence. 他们会将面粉装在精

英国学生科学读本 第94期:一副风箱(1)

Lesson 94 A Pair Of Bellows 第94课 一副风箱 Have you a pair of bellows at home? 你的家里是否有一副风箱呢? If you have, I hope that you will examine them carefully, and try to see how they are made, and to understand their use. 如果有

英国学生科学读本 第93期:蝌蚪与青蛙(1)

Lesson 93 Tadpole And Frog 第93课 蝌蚪与青蛙 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

英国学生科学读本 第115期:捉迷藏

Hide-and-seek 捉迷藏 Now hide the flowers beneath the snow, 花朵藏在了雪中， Where Winter cannot find them; 冬天的寻找，劳而无功； Their safety nooks he does not know, 既不知道隐蔽的所在， They left no tracks behind th

英国学生科学读本 第97期:人体(3)

Lesson 97 The Body 第97课 人体 If you wish to keep your body healthy, you must learn something about its inside as well as about its outside. 你想要有一个健康的身体, 那就不仅需要了解它的外部结构, 更要明白它的内在构

英国学生科学读本 第107期:铁

Iron 铁 Hid from our eyes, deep in the ground, 深深的地下，眼晴看不到的地方， Great stores of gems and gold are found, 能把金银财宝的仓库找到， Rich mines of lead, and tin so fine; 有丰富的铅矿，上好的锡矿， B

英国学生科学读本 第112期:小虫子累了

A Tired Little Worm 小虫子累了 A tired little worm went to sleep one day, 一天有只小虫子累了， In a soft little cradle of silken grey, 用灰色的软丝把自己围绕， And he said, as he snugly curled up in his nest, 舒服地蜷缩到

英国学生科学读本 第87期:蚯蚓(2)

These bristles point backwards. 这些刚毛朝向后方。 If we move a finger along the worm from the head to the tail, the body feels quite smooth; 用一根手指从蚯蚓的头部摸向其尾部, 就会感觉它的身体非常光滑； but if we

英国学生科学读本 第88期:冷凝(2)

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

英国学生科学读本 第88期:冷凝(1)

Lesson 88 Condensation 第88课 冷凝 When the water in a kettle boils, it boils first at the bottom. 当水壶中的水沸腾时, 首先开始沸腾的是底部的水。 We cannot see this in a kettle, because the kettle is made of iron. 我们无法

英国学生科学读本 第86期:太阳,月亮与星星(1)

Lesson 86 Sun, Moon, And Stars 第86课 太阳、月亮与星星 You know that everything which affects your senses is called matter, and that the earth is a great ball of matter. 你知道, 任何能够对你的感官造成影响的东西都叫做物质

英国学生科学读本 第85期:可可与巧克力(2)

Some people like to make their cocoa by boiling the nibs in water. 有些人喜欢用水来煮可可粒, When this is done, a layer of cocoa-butter is formed on the top of the cocoa. 这样一来, 可可的上面就会形成一层可可脂。 But mos

英国学生科学读本 第84期:勤劳的蜜蜂(2)

The skin will swell at the place where you were stung, and that spot will feel very sore for several days. 皮肤被叮咬的地方高高肿起, 在接下来的几天时间里, 这个伤口都会令人感到疼痛难忍。 The hive bee is dark brown

英国学生科学读本 第3期:木杆铅笔

第三课 木杆铅笔 Have you a lead-pencil? If not, I want you to get a loan of one, and to look at it very carefully. It is made of woodmost likely of cedar wood, for the wood of the cedar tree is much used for making pencils. 小朋友，你有木