To express one's opinions or complaints in a loud, indiscreet manner.
回嘴：不礼貌地说；回嘴
a person, typically a child, who has to be looked after and fed
（尤指孩童）需要赡养的人
(informal)tend to talk boastfully without any intention of acting on one's words
(非正式)只说不作；干打雷不下雨
(of a dog) bark; bay
（狗）吠
(informal)not say anything, especially not reveal a secret
(非正式)守口如瓶
would he keep his mouth shut under interrogation?.
审讯时他会守口如瓶吗？。
(informal)say something
(非正式)开口说话
sorry, I'll never open my mouth about you again.
对不起，以后我再也不说有关你的话了。
(informal)be careful about what one says
(非正式)说话注意
(informal)talk in an unpleasantly loud and boastful or opinionated way
(非正式)自吹自擂毫无顾忌地高声谈论；固执己见地高谈阔论
he was mouthing off about society in general.
他正就整个社会高谈阔论。