| 21. | His life had reached its natural term. |
| 他已尽其天年。
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| 22. | Her hair has a natural wave. |
| 她天生鬈发。
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| 23. | The college debating society was a natural springboard for her career in politics. |
| 大学里的辩论社自然成了她从政的垫脚石。
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| 24. | Animals in zoos are not in their natural surroundings. |
| 动物园中的动物没有自然环境。
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| 25. | She has a ( natural ) bent for music. |
| 她(生性)爱好音乐。
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| 26. | Inhibition of natural impulses may cause psychological problems. |
| 压抑自然的冲动可能会引起心理上的问题。
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| 27. | The river is a natural barrier between these two countries. |
| 这条河是两国间的天然界线。
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| 28. | The natural beauty was complemented by the ancient temple on the mountain top. |
| 山顶的古寺使这里的自然美景增色。
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| 29. | Rain and frost are natural agents that wear away rocks. |
| 雨和霜是风化岩石的自然力量。
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| 30. | Poor food arrests the natural growth of children. |
| 粗劣的食物阻碍儿童的发育。
|