歇心

hái zi dōu yǐ jīng zhǎng dà chéng rén lǎo ren jia kě yǐ xiē xīn le

孩子都已经长大成人，老人家可以歇心了。

Now that his children have all grown up, the old man is finally free from worries.

hái zi yǐ jīng gōng zuò le nǐ kě yǐ xiē xīn le

孩子已经工作了，你可以歇心了。

As your children have their own jobs, you no longer need to worry about them.

shí yàn lǚ cì shī bài kě tā hái shi bù xiē xīn

实验屡次失败，可他还是不歇心。

Although the experiment failed many times, he keeps doing it.