| 51. | The library will keep the book for you till the weekend. |
| 图书馆将为你把这本书保留到周末。
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| 52. | You never know what you can do till you try. |
| （谚）下手尝试，才知自己有几分本事。
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| 53. | Keep to your task till you've finished. |
| 坚持工作，直到做完为止。
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| 54. | I waited till had tired my patience for his return. |
| 我等他回来一直等到最后失去了耐心。
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| 55. | It is a reprehensible practice to keep a child up till nine or ten o'clock at night. |
| 让儿童熬夜到九十点钟是一种应受指摘的做法。
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| 56. | I will put off this purchase till another time. |
| 我要推迟到下次买这东西。
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| 57. | She performed the experiment over an over, working till midnight. |
| 这项实验她做了一遍又一遍，一直做到深夜。
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| 58. | Pour the rest of the soup away, it won't keep fresh till tomorrow. |
| 把剩汤倒掉，留到明天就不新鲜了。
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| 59. | I see very little chance of the railway being opened till Feb.1. |
| 我认为在2月1日以前这条铁路通车的可能性极小。
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| 60. | The Smith family was caught up in the war in Europe and we did not see them again till the war was over. |
| 史密斯一家被战争阻在欧洲，直到战后我们才又见到他们。
|