sound off

US /saʊnd ɔf/
UK /saʊnd ɔf/
"sound off" picture
1.

大声发表意见, 大发牢骚

to express one's opinions loudly or angrily

:
He likes to sound off about politics at family gatherings.
他喜欢在家庭聚会上大声发表政治观点。
The manager sounded off about the team's poor performance.
经理对团队糟糕的表现大发牢骚
2.

报数, 点名

to count off or call out names in a military formation

:
The drill sergeant ordered the recruits to sound off.
训练士官命令新兵们报数
Each soldier had to sound off their number.
每个士兵都必须报出自己的号码。