| 21. | Childhood is a period of rapid growth. |
| 童年是生长迅速发展。
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| 22. | He is showing rapid progress in his studies. |
| 他的学业进步很快。
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| 23. | He has made rapid and brilliant progress in his studies at the university. |
| 他在大学的学业取得迅速而突出的进步。
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| 24. | We pushed on at a rapid pace. |
| 我们快速向前推进。
|
| 25. | He estimated the total by a rapid cast of the figures. |
| 他很快地把这几个数目加起来，估出了总数。
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| 26. | He made a rapid count of those present. |
| 他很快地数了一下出席的人数。
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| 27. | The book met with a rapid sale. |
| 这本书很畅销。
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| 28. | Calamities fall in rapid sequence. |
| 不幸事件接二连三地发生。
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| 29. | The rapid current set them northward. |
| 急流把他们推向北去。
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| 30. | the sniper snapped off six rapid shots. |
| 狙击手迅速地连放了6枪。
|