My father does not make idle threats.

我父亲的威胁绝不是空话。

The heavyweight champ made a prediction of his own – pain! It was no idle threat.

这位重量级冠军预测了一下自己的比赛结果——疼痛！这不是空话。

Have you ever known your father to make an idle threat?

你父亲哪次威胁不是说到做到？

Southern leaders, while protesting against the declarations of their opponents, were able to view them as idle threats in no way endangering the security of the measures by which political reconstruction had been undone.

南方领导人在抗议反对者的声明的同时，能够将其视为无聊的威胁， 绝不会危及取消政治重建的措施的安全。