ph.
1. The suspect clammed up when lawyers asked about his girlfriend.
当律师问嫌疑犯有关他女友的事时，他闭口不答。
2. Will you clam up! The boss is talking.
请你保持安静！老板在说话。
3. You should not clam up on him.
你不应该拒绝跟他谈话。
1. 拒不开口：clam face 胆小鬼 | clam up 拒不开口 | clam 蛤
2. 沉默不语/拒绝说话：clams 蛤/蚌 | clam up 沉默不语/拒绝说话 | mussel 贻(yi)贝
3. 守口如瓶,拒不开口,沉默不语：002 have a chip on one's shoulder叫阵,叫板 | 003 clam up守口如瓶,拒不开口,沉默不语 | 004 take someone to the cleaners使人囊中如洗,一贫如洗
1. (常因害羞或避免说漏嘴)不再开口，闭口不言
If someone clams up, they stop talking, often because they are shy or to avoid giving away secrets.
e.g. As soon as I told her my name, she clammed up.
我告诉她我的名字后，她就什么也不说了。
1. danci.911cha.com
1. While they may remember some of the grammar points drilled into their heads decades ago, they tend to clam up in real conversation.