缄口不语 meaning in English

dummy up

We drifted forward with rigid motions, limbs stiff and voices silent .
我们缓缓地往前走，动作呆板，手足僵硬，缄口不语。
The old countesss condition was understood by all the household , though no one ever spoke of it , and every possible effort was made by every one to satisfy her requirements
老太太的这种情况全家人大家都知道，不过大家都缄口不语，只是尽可能去满足她的愿望。
The stage of college and university is a golden stage for students to study knowledge and associate with other persons . but , from my contraction with students , i have found many students fear commuication , they feel ashamed when they associate with other or when they meet stranger , and they ofen keep silence aside even through they take part in social party , they are shy to speak their difficulties out to anybody if they have some trouble with their life and study … … this phenomenon is called social anxiety
大学时期是学习知识、结交朋友的黄金时期。然而从我与大学生的接触中发现不少大学生害怕交往，遇人未语先面红耳赤；即使参加社交活动，也多躲在一旁缄口不语；生活学习中遇到难题，常常羞于启齿… …这种现象为社交焦虑。社交焦虑是在与他人交往时体会到的恐惧、紧张和担忧。