He's so stressed out at work. He started to smoke again.

他工作压力很大。他又开始抽烟了。

Oh, no, you should talk about it with him. It was not easy for him to quit.

哦，不是吧，你应该跟他谈谈。当初他戒烟多不容易啊。

重点讲解:

He's under a lot of work pressure.

He's so stressed out at work.

形容某人“工作压力大”，可以说He's under a lot of work pressure, under pressure有“面临压力，受到压力”的意思，但老外在口语中更常用be stressed out 来形容某人“压力很大”。