来自 tough,坚硬的，坚强的，-en,使。

1. My father tried to teach me to toughen up.

我父亲试图教我变得坚强。

2. They have put considerable pressure on the Government to toughen its stance.

他们已对政府施加了相当大的压力，要求其采取强硬立场。

3. Talks are under way to toughen trade restrictions.

加强贸易限制的会谈正在进行中。

4. Do not add salt to beans when cooking as this tends to toughen the skins.

煮豆荚时别加盐，因为这常会使豆壳变硬。

5. Taking care of pooch was his attempt to toughen me up and teach me responsibility.

他盘算着通过照看普茨使我坚强起来,并教我养成责任感.