1704949659
650 observance—observation
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1704949661
observance表示“遵守”：
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1704949663
He insisted on the observance of training rules．他坚持遵守训练规则。
1704949664
1704949665
the observance of the speed limit 遵守车速限制
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1704949667
Local councils should use their powers to ensure strict observance of laws．地方政务委员会应当运用它们的权利保证严格遵守法律。
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1704949669
observation意思则不同，表示“观察”：
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1704949671
His powers of observation were highly developed．他的观察力得到很大发展。
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1704949673
This telescope is used for the observation of distant stars．这架望远镜可用来观察远方的星星。
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1704949675
Then he was taken to hospital for observation．然后他被送进医院进行观察。
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1704949678
651 obtain
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1704949680
obtain表示“得到”、“获得”：
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1704949682
He failed to obtain a scholarship．他没能获得奖学金。
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1704949684
He obtained permission to edit a daily paper．他得到批准编一份日报。
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1704949686
The astronauts obtained rock samples from the moon．宇航员从月球上取得岩石样品。
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1704949688
但这个词比较文气，在日常口语中可用get代替：
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1704949690
He got a scholarship to the University of Melbourne．他获得墨尔本大学的一份奖学金。
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1704949692
We’ll get permission to use some of our funds．我们将获准动用一部分基金。
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1704949694
不过get不能用于被动结构，在书面语中我们常用obtain：
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1704949696
All the above items can be obtained from our office．所有上述资料可向我们办公室索取。
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1704949698
We need to know where this kind of information can be obtained．我们需要知道在哪里可获得这类资料。
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在口语中可用get的主动结构表示同样意思：
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1704949702
You can get this kind of information from the tourist office．这类资料可以向旅行社索取。
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1704949705
652 occasion
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occasion读作/əˈkeiʒən/，可以表示“场合”、“活动”：
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