My train leaves in a couple hours, so I’ve got to watch the time.

我的火车还有几个小时就要开了，所以我得注意时间。

Have a bad temper:

脾气差

例句：

I knew you have a bad temper.

早就知道你脾气不好了。

Lose one’s temper:

脾气暴躁

例句：

He is so laid-back. I’ve never seen him lose his temper.

他总是不慌不忙地。我从没见他发过脾气。

Have a short fuse:

容易发怒

例句：

I have a very short fuse and a violent temper.

我容易发怒，脾气暴躁。