Definition: to say that something is wrong or that you are annoyed about something Level: B1
许多居民抱怨建筑噪音太大。
Many residents ___complain about the loud construction noise.
他抱怨说自己的建议在会议上被忽视了。
He ___complained that his suggestions were ignored at the meeting.
如果你的餐食是凉的，你应该向餐厅经理投诉。
If your meal is cold, you should ___complain to the restaurant manager.
