他练习自卫术是为了在危险情况下保护自己。

He practices ___self-defense to protect himself in dangerous situations.

在法庭上，她辩称自己的行为是正当防卫。

In court, she argued that her actions were justified as ___self-defense.

她参加了一个自卫课程来学习如何保护自己。

She took a ___self-defense class to learn how to protect herself.