I can't be doing with people who complain all the time.
我无法忍受那些整天发牢骚的人。
Just because I don't complain, people think I'm satisfied.
就因为我不发牢骚，大家便以为我满意了。
I'm going to complain to the manager about this.
我要就这件事向经理投诉。
I complained to the manager but I didn't get any satisfaction.
我向经理投诉，但问题丝毫没有得到解决。
In the end, I just got fed up with his constant complaining.
他不停地发牢骚，终于使我厌烦了。
She left early, complaining of a headache.
她说自己头疼，很早就离开了。