【闭口不言】〖bì ku bù yán〗[shut one's mouth, saying nothing; keep one's tongue between one's teeth; close-lipped]

闭目塞听引外资，

口绝行语吞国企。

不拘文法斥剥削，

言讷词直切时弊。

闭住嘴巴不言语，指有话不说。Shut up mouth no speak, refers has word not say.同：爱口识羞、哑口无言。反：畅所欲言、振振有词。