新概念第四冊(cè)課文精講 Lesson2:不要傷害蜘蛛

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課文2 不要傷害蜘蛛

14. Why, you may wonder, should spiders be our friends?

你可能會(huì)覺得奇怪， 蜘蛛怎么會(huì)是我們的朋友呢?

15. Because they destroy so many insects, and insects include some of the greatest enemies of the human race.

因?yàn)樗鼈兡芟麥缒敲炊嗟睦ハx，其中包括一些人類的大敵，

16. Insects would make it impossible for us to live in the world;

昆蟲就會(huì)使我們無法在地球上生活下去，

17. they would devour all our crops and kill our flocks and herds,

昆蟲會(huì)吞食我們的全部莊稼，殺死我們的成群的牛羊。

18. if it were not for the protection we get from insect-eating animals.

要不是人類受一些食蟲動(dòng)物的保護(hù)，

19. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.

我們要十分感謝那些吃昆蟲的鳥和獸，然而把它們所殺死的昆蟲全部加在一起也只相當(dāng)于蜘蛛所消滅的一小部分。

20. Moreover, unlike some of the other insect eaters, spiders never do the harm to us or our belongings.

此外，蜘蛛不同于其他食蟲動(dòng)物，它們絲毫不危害我們和我們的財(cái)物。

21. Spiders are not insects, as many people think, nor even nearly related to them.

許多人認(rèn)為蜘蛛是昆蟲，但它們不是昆蟲，甚至與昆蟲毫無關(guān)系。

22. One can tell the difference almost at a glance,

人們幾乎一眼就能看出二者的差異，

23. for a spider always has eight legs and insect never more than six.

因?yàn)橹┲攵际?條腿，而昆蟲的腿從不超過6條。

24. How many spiders are engaged in this work no our behalf?

有多少蜘蛛在為我們效力呢?

25. One authority on spiders made a census of the spiders in grass field in the south of England,

一位研究蜘蛛的權(quán)威對(duì)英國(guó)南部一塊草坪上的蜘蛛作了一次調(diào)查。

26. and he estimated that there were more than 2,250,000 in one acre;

他估計(jì)每英畝草坪里有225萬多只蜘蛛。

27. that is something like 6,000,000 spiders of different kinds on a football pitch.

這就是說，在一個(gè)足球場(chǎng)上約有600萬只不同種類的蜘蛛。

28. Spiders are busy for at least half the year in killing insects.

蜘蛛至少有半年在忙于吃昆蟲。

29. It is impossible to make more than the wildest guess at how many they kill,

它們一年中消滅了多少昆蟲，我們簡(jiǎn)直無法猜測(cè)，

30. but they are hungry creatures, not content with only three meals a day.

它們是吃不飽的動(dòng)物，不滿意一日三餐。

31. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.

據(jù)估計(jì)，在英國(guó)蜘蛛一年里所消滅昆蟲的重量超過這個(gè)國(guó)家人口的總重量。