nullify; make ineffective
取消;使无效
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alcohol negates the effects of the drug .酒使药失去了效力。
【逻, 语法】 否定(从句,句子,命题)。
deny the existence of (something)
否定;否认(某物)
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negating the political nature of education. 否定教育的政治本质。
"early 17th cent. (in senses 1 and 3): from Latin