complain

complain, grumble, murmur

动词 complain:

1. express complaints, discontent, displeasure, or unhappiness
   同义词：kick, plain, sound off, quetch, kvetch
2. make a formal accusation; bring a formal charge

1. Stop grumbling! You've got nothing to complain about.
   别抱怨了! 你没什麽可抱怨的。
2. You've got nothing to complain about.
   你没什么可抱怨的。
3. Don't complain without good cause.
   没有充分的理由就不要抱怨。
4. He is always complaining.
   他总是在发牢骚。
5. The tourist complained that the room was too dirty.
   游客抱怨说房间太脏了。
6. They complained bitterly about the injustice of the system.
   他们愤恨地抱怨制度不公平。

com.plain

v.intr.（不及物动词）
com.plained,com.plain.ing,com.plains
To express feelings of pain, dissatisfaction, or resentment.
抱怨：表达疼痛、不满或愤怒的感受
To make a formal accusation or bring a formal charge.
控告：提出正式的控告或起诉

来源：
Middle English compleinen
中古英语 compleinen
from Old French complaindre complaign-
源自 古法语 complaindre complaign-
from Vulgar Latin *complangere
源自 俗拉丁语 *complangere
Latin com- [intensive pref.] * see com-
拉丁语 com- [前缀，表加强词义] *参见 com-
Latin plangere [to lament] * see pl3k- 2
拉丁语 plangere [悲哀] *参见 pl3k- 2

【引伸】
complain.er
n.（名词）