Secondly, trees can give us shade. On a hot summer day, people can have a rest under the shade of a tree after they have walked a long way.
Thirdly, trees help to prevent drought and floods. If we cut trees down in large numbers, we will lose the best friends in the world.
【参考译文】
树对人的益处有三个方面。首先,它们给人类提供了食品、木材及其他产品。如果没有树,动物无法在地球上生存下去。
其次,树给我们树荫。在炎热的夏天,人们在走了很长的路后可以在树荫下休息。
第三,树有助于防止旱灾和水灾。如果我们大量砍伐树木,我们会失去世界上最好的朋友。
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