contradict

The evidence found at the crime scene seems to contradict the suspect's alibi.

(Chinese) 在犯罪现场发现的证据似乎反驳了嫌疑人的不在场证明。

It is impolite to constantly contradict your teacher during the middle of a lecture.

(Chinese) 在讲座进行中不断反驳老师是不礼貌的。