动词短语 to clam1 up 用来形容一个人由于紧张,尴尬或不想谈论某件事而沉默不语。
例句
Adam was very naughty and ate all the cookies. When his mother asked where they were he clammed2 up and couldnt tell her.
When I was young I used to clam up when a stranger asked me a question.
请注意
另一个短语 the world is your oyster3 意思是世界是你,机会不少,万事顺心,可随性。
Now that you have your college degree, the world is your oyster!