| 21. | A club is a place to make frequent contacts with friends. |
| 俱乐部是与朋友经常交往的场所。
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| 22. | When distress prevails crime is frequent . |
| 生活多难，罪行频繁。
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| 23. | The Japanese pirates made frequent descents upon the Chinese coasts during the Ming Dynasty. |
| 在明朝，日本海盗时常袭击中国沿海。
|
| 24. | I have frequent disputes with him. |
| 我与他常有争论。
|
| 25. | The frequent transitions from cold to warm weather this spring have caused much illness. |
| 今年春天的天气时冷时热，引起许多人生病。
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| 26. | Snow is of frequent occurrence in winter. |
| 冬天经常下雪。
|
| 27. | The audience showed its appreciation of the clown's performance by frequent bursts of laughter. |
| 观众的阵阵笑声表示对丑角表演的赞赏。
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| 28. | Diabetes is by far most frequent among overweight persons. |
| 糖尿病在身体过重的人中尤为常见。
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| 29. | They have frequent fires in Tokyo. |
| 东京火灾频起。
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| 30. | Traffic accidents are alarmingly frequent of late. |
| 近来交通事故频繁得吓人。
|