31. | Planes fly daily over regular routes with time-table precision. |
| 飞机每日精确地按时刻表飞行在各条航线上。
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32. | The pulse is normal [ regular ]. |
| 脉搏正常。
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33. | Her periods are regular [irregular ]. |
| 她的经期正常[不正常]。
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34. | Regular exercise conditions the body for strenuous activity. |
| 经常性的锻炼能使身体适应紧张的活动。
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35. | Some theatrical companies travel over regular circuits. |
| 有些剧团按照一定的路线作巡回演出。
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36. | My mother and her sister have been regular correspondents for years, writing to each other weekly. |
| 多年来我母亲和她妹妹定期通信,每星期一次。
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37. | The children clapped out a regular time while the teacher played the tune. |
| 老师弹曲子时,孩子们有节奏地击掌打拍子。
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38. | Thursday is the regular date for meeting. |
| 星期四是举行例会的日子。
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39. | The doctor visits his patients at their homes at regular intervals. |
| 那医生定期到病人家出诊。
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40. | Take your car for regular services. |
| 把你的汽车开来作定期检修。
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