He vowed to take legal action.

他发誓要诉诸法律行动。

Your only recourse is legal action.

你的唯一依靠就是诉诸法律。

They decided against taking legal action.

他们决定不提起诉讼。

They have threatened us with legal action.

他们用起诉来要挟我们。

Legal action is being taken to recover the money.

正采取法律措施来收回那笔钱。