undermine
单词辨析：
尤指使信心、权威等变弱或失去效力。
These limitations may undermine the health care system.
这些限制可能会损害医疗保健制度。
The supporters' confidence in the government has been undermined by several recent scandals.
最近几次丑闻已动摇了支持者对政府的信心。
The constant criticism has undermined her position.
不断的批评已经损害了他的地位。
尤指逐渐削弱某人的力量、信心、意志等。
The hot sun sapped the energy of the marathon runners.
火辣辣的太阳烤得那些马拉松选手虚软无力。
Years of failures in the elections have sapped him of his confidence.
连年竞选失败使他逐渐丧失了自信。
指使某人或某物变得不重要或不强大，或使人身体衰弱，也可指动摇某人的决心。
He did it to weaken the manager's position.
他这么做是为了削弱经理的地位。
The new evidence has weakened the case against the accused.
新的证据削弱了对被告的指控力度。
The children were weakened by lack of essential nutrients for a long time.
那些孩子因为长期营养不良而身体衰弱。
These policies have weakened the resolve of potential house buyers.
这些政策动摇了潜在购房者的决心。
相关例句：
We idolise success and status and thus undermine our mutual respect.
我们过度崇拜成功和地位，从而削弱了彼此间的尊重。
Don't undermine your achievements by misspelling them.
不要因为拼写错误而破坏了你的成就。
Both sides should refrain from taking any actions that may undermine mutual trust or prejudge the outcome of negotiations.
双方都应避免采取任何可能破坏互信或预断谈判结果的行动。
Hatred will undermine your tolerance and keen sense of justice.
乐观会增强你的信心和弹性，而仇根会使你失去宽容和正义感。
And I think that that threatens to undermine the objectivity.
我认为这威胁到了公正性。
They have not got the right to undermine the way we have helped this lad.
他们没有权利破坏我们和这个年轻人的关系。