在18世纪，船长会用拖龙骨的方式来惩罚偷窃的水手。

In the 18th century, captains would punish thieves by ___keelhauling them.

教练严厉惩罚了队员们在比赛中的糟糕表现。

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