1、
A prolonged drought had necessitated the introduction of water rationing...
由于持续干旱，用水需要实行配给了。
《柯林斯高阶英汉双解学习词典》
2、
3、
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Recent financial scandals have necessitated changes in parliamentary procedures.
最近的金融丑闻使得议会程序必须改革。
《牛津高阶英汉双解词典》
5、
6、
研究背景: 股骨粗隆间骨折的患者,活动后骨折移位常常不得不进行二次手术.
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7、
Our night was disturbed by a fire alarm that necessitated everyone evacuating to the car park.
有一天火灾警报响起,大家都疏散到了停车场.
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