| 51. | The proper study of mankind is man. |
| 人类应当研究的就是人。
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| 52. | What is the proper style of a bishop? |
| 主教的正式称号是什么？
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| 53. | Night is the proper time to sleep. |
| 夜晚是睡眠的适当时间。
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| 54. | Everything was in proper trim. |
| 一切都已准备就绪。
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| 55. | Everything is kept in proper order. |
| 一切都有条不絮。
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| 56. | The serious investor needs a proper 'portfolio' -- a well-planned selection of investments, with a definite structure and a clear aim. |
| 认真的投资者需要一份正规的投资组合表 -- 一种计划很周密的投资选择，包括你的投资结构和明确的目标。
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| 57. | but the scientific dust has long since settled, and today we can see even his famous clash with the Inquisition in something like its proper perspective. |
| 但是，自他逝世以来，那场科学上的纷争早已平息了下来，甚至他和宗教法庭的著名冲突，我们今天也能正确如实地看待。
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| 58. | It is time the authorities concerned took proper steps to solve the traffic problems. |
| 该是有关当局采取适当的措施来解决交通问题的时候了。
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| 59. | A proper part-time job does not occupy students' too much time. In fact, it is unhealthy for them to spend all of time on their study. As an old saying goes: All work and no play makes Jack a dull boy. |
| 一份适当的业余工作并不会占用学生太多的时间，事实上，把全部的时间都用到学习上并不健康，正如那句老话：只工作，不玩耍，聪明的孩子会变傻。
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| 60. | Proper measures must be taken to limit the number of foreign tourists and the great efforts should be made to protect local environment and history from the harmful effects of international tourism. |
| 应该采取适当的措施限制外国旅游者的数量，努力保护当地环境和历史不受国际旅游业的不利影响。
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