V-T If something necessitates an event, action, or situation, it makes it necessary. 使成为必需 [正式]
A prolonged drought had necessitated the introduction of water rationing.
一场持续的干旱使定量供水的引进成为必需。
Coexistence necessitates the total noninterference by any power in the internal affairs of another.
共处必需是任何国家都决不干涉别国的内部事务。
It's an unpopular measure, but the situation necessitates it.
这是不得人心的办法，但形势需要这样做。
Obviously, this necessitates a change in the definition file as well
显然，还必须修改定义文件
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