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preclude/
prɪˈkluːd
/
1.vt.
阻止，防止，排除……的可能
The price of the book may preclude its private purchase, but it would be a useful addition to any library.
这本书的价格或许会令个人放弃购买，但它对任何一家图书馆而言都是有用的补充。
Your role in the projects precludes your involvement in the competitive project.
你在该项目中的角色使你无法参与到这个竞争性项目中。
2.vt.
预防