speak up
大声说出来，表达自己的观点或意见
口语·鼓励大胆发言
英文释义
to voice one's thoughts, opinions, or concerns openly and assertively
例句
If you have an idea, don't be shy—speak up in the meeting.
典故来源
由“speak”和“up”组合，字面意为提高音量，引申为勇敢表达观点。