VERB
削弱；破坏
If your attempts to achieve something are undercut by something, that thing prevents your attempts from being effective.
例句
The appeal in Miller's pictures of Indian women is undercut at times by what the artist writes about them...
米勒画作中印第安妇女的魅力有时会被艺术家的文字描述削弱。
Popular support would be undercut by political developments.
民众的支持率将会随政治势态的发展而下降。