clammed up

• v. 保持沉默(拒不开口)

clammed up的用法和样例：

例句

1. The suspect clam up when lawyer ask about his girlfriend.
   当律师问嫌疑犯有关他女友的事时，他闭口不答。
2. He always clammed up when we asked him about his family.
   我们一问到他的家庭时，他总是闭口不言。