拳击手一记迅猛的上勾拳击中了对手的下巴。

The boxer landed a sharp ___upper-cut to his opponent's chin.

他在会议上的反驳像一记漂亮的上勾拳，直接击垮了对方的论点。

His rebuttal at the meeting was a perfect ___uppercut that knocked down the opponent's argument.