negates例句

Alcohol negates the effects of the drug.
酒精能使药物失效。

The lack of deep hardening in these alloys negates their use.
这些合金缺乏深层硬化能力使它们无法利用.

Seat Face: Negates need for flange gaskets.
阀座表面: 不需要使用阀兰垫圈.