Lesson 77 There's Nothing Like Leather! 第77课 百货不如皮货 Every child who reads this book knows that leather is made from the skins of animals. We cannot, of course, call any piece of skin leather; it must be carefully prepared before we ca...
They are shaped like little chisels. 它们的形状就像凿子一样。 These cutting teeth always keep their sharp, chisel-like edge, for the front of each tooth is formed of a very hard stuff called enamel, while the rest of the tooth is made of...
Lesson 76 The Common Mouse 第76课 家鼠 This little animal likes to live near the dwellings of men, for there it finds most easily the food which it likes best to eat. Mice generally remain in their holes during the daytime. It is only the young a...
the young plants as they grew would soon choke one another. 随着幼年蒲公英逐渐长大, 它们就会限制彼此的生长空间。 Did you ever look for dandelions on a cold wet day? 你有没有在清冷的雨天看到过蒲公英? It is not...
Lesson 75 Only A Weed 第75课 蒲公英 When the dandelion flowers have all received their supply of pollen, and their seeds are set or fully formed, 当蒲公英的花朵全部获得它们所需的花粉、种子也做好准备或者说完全成型之...
In spring, some hollow flower-stalks grow up from the centre of the rosette of leaves. Each stalk bears what looks like one large yellow flower. But if you pull one of these flower-heads to pieces, you will find that it is really made up of a great m...
Lesson 74 Only A Weed 第74课 蒲公英 All through the summer, and during spring and autumn as well, our meadows and waste places are thickly dotted with the bright-yellow flowers of the common weed called the dandelion. And even throughout the win...
Glass is made chiefly of fine white sand or silica melted in a furnace. To make the sand melt easily, we must mix with it some soda, some chalk or lime, and a small quantity of broken glass. 玻璃主要由细致的白沙或硅石在熔炉中炼成。为...
Lesson 73 A Pane Of Glass 第73课 玻璃窗 If you had lived in Britain a thousand years ago, you might have seen panes of glass in the churches, but you would have found very few glass windows in the houses of the people. The windows in those days...
The shell is made of lime, and is very brittle. If you do not often give your hens some pieces of chalk or of lime to peck, they will very likely sometimes lay eggs without any shell at all. 蛋壳是石灰质的, 非常脆。如果你喂养的母鸡无...
