英国学生科学读本 第79期:扎人的刺猬(2)

With these claws the hedgehog can burrow in the earth under the roots of trees, or in old walls; and in such places he often makes his home. 凭借这些锋利的工具, 刺猬能够在树根或老墙之下打洞穿行, 通常也都在这些地方安家

英国学生科学读本 第81期:一张纸(2)

The torn rags are then boiled in water to which lime and soda have been added. This mixture removes all grease, stains, and colouring matters. The clean white rags are next put with water into another machine, which pulls the fibres apart, tears them

英国学生科学读本 第80期:我们脚下的土地(2)

The rock called sandstone is made up of a great many grains of sand. The beating of the rain on this rock washes the grains apart, and so the hard sandstone slowly changes into loose sand. 砂岩主要由大量沙粒组成。当雨水打下来的时候

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101期:鸟儿的家

The Birds House 鸟儿的家 Little bird, little bird, 小鸟，小鸟， Pray where is your house? 你的家在何方？ High up in a tree, Made of down and of moss, 在高高的树上，用绒毛和青苔筑窝， And of sticks laid across; 还有草

英国学生科学读本 第103期:小水滴的旅程

The Raindrops Ride 小水滴的旅程 Some little drops of water 有些小水滴， Whose home was in the sea, 住在大海里， To go upon a journey 一天邀请去旅行， Once happened to agree. 碰巧都同意 A white cloud was their carriage; 赶

英国学生科学读本 第106期:棉花树

The Cotton Tree 棉花树 Sing well fare the cotton-tree! 一起来祝愿棉花树 Bravely may it grow， 长大吧，发出勇气的光彩！ Bearing in its seeded pod 让种荚里藏身的棉朵， Cotton white as snow! 像雪花一般洁白！ Spi

英国学生科学读本 第77期:百货不如皮货(2)

When the tanned skins are taken out of the pits, they are well dried and rolled. After this has been done, we no longer call them skins, but leather. To finish the leather, it must be curried. This is done by rubbing into its pores as much oil and ta

英国学生科学读本 第64期:红色金属--铜(2)

Copper can be rolled or hammered out into thin sheets, and so we say that it is malleable. It can also be easily drawn out into wire, and for this reason we call it ductile. Sheet copper is much used for covering the bottoms of ships, and for making

英国学生科学读本 第31期:游来游去的蛇(2)

Snakes do not chew their food. They swallow their prey whole; and then they go into their holes and sleep fordays, or even weeks. 蛇吃东西不会嚼, 而是整个儿把猎物吞下去的。吞下去之后就回到洞里, 一睡就睡上几天, 甚至

英国学生科学读本 第21期:一棵麦穗

Lesson22 An ear of wheat 第22课 一棵麦穗 I am sure that you have all had some bread to eat today. How many of you know what bread is made of? The baker makes it of flour mixed with water, and some yeast, and a little salt. These things mixed to

英国学生科学读本 第19期:一卷棉线

Lesson19 A reel of cotton 第19课 一卷棉线 Let us take some of the white cotton off this reel, and try to find out what the thread of cotton is made of. We can pull the white thread to pieces, and then we see that it is made of many short fibres