l大声说话(尤指长时间发牢骚)
The leaders have sounded off on various issues.
头头们在许多问题上大发了中牢骚。
Don't just sound off without raising your hand.
你没举手,就不要发言。
(军队用语)吹牛,自夸
He's always sounding off about what a big shot he is.
他动不动就吹嘘自己是什么了不起的大人物。
泄露,透露,暴露
Keep it a secret. Don't sound off about it.
这事要保守秘密,不要泄露出去。