assert

/əˈsərt/

state categorically

中文释义：断言；声称；坚持

The scientist asserted that the new drug was effective in clinical trials.

这位科学家断言，这种新药在临床试验中是有效的。

He asserted his innocence despite the overwhelming evidence against him.

尽管有对他不利的压倒性证据，他仍坚称自己无罪。