在18世纪，海盗有时会用拖龙骨的方式来严惩叛变的水手。

In the 18th century, pirates sometimes ___keelhauled mutinous sailors as a harsh punishment.

教练严厉惩罚了球员在比赛中的糟糕表现。

The coach ___keelhauled the players for their poor performance in the game.