clams up

She clams up very time I bring up the question of marriage.

每次我提出结婚时，她总是沉默不语。

Nor are the rules of algebra governed by social conventions: a gawky 14-year-old who clams up in interviews can still do well.

社会习俗也绝然不能支配代数学的规律：一名在面试中沉默笨拙的14岁小孩仍然能够在这方面做的很好（指代数）。

it works nearly every time. When we disagree, he clams up, stands back, and lets me trip over my own feet.

每当我们意见不和时，他保持沉默，不和我针锋相对，而是等我把自己绊倒。

Joseph clams up when questioned about his army experiences in Northern Ireland.

此外，一旦被问到在北爱尔兰的参军经历，他便沉默不语。

Philipp Adler clams up when asked about the details of making his Swiss Highland Malt Whisky.

菲利普·阿德勒在被问及制作瑞士高地麦芽威士忌的细节时沉默了。

Tank. LL: Laura has been acting really strange lately, but every time I try to ask her what's bothering her, she just clams up. LH

我也注意到了，Laura最近是有点怪怪的。我也问过她怎么回事，她