speak one's mind 畅所欲言。如，My boss doesn't like to hear ideas different from his own. No one dares to speak their mind. 老板不喜欢听取不同意见，所以没人敢畅所欲言。He's a stand up guy. He never hesitates to speak his mind. 他是个有骨气的人，从来都是心里怎么想嘴里就怎么说