Definition: to say that you are certain something is true Level: C2
他坚称自己不在事故现场。
He continues to ___maintain that he was not at the scene of the accident.
他坚称以前从未见过那个女人。
He ___maintains that he has never seen the woman before.
批评者坚称新政策将损害环境。
Critics ___maintain that the new policy will harm the environment.
