1. He clammed up when I asked him who else was involved. 当我问他还有谁参与此事时，他咬紧牙关，不肯交代。
2. I clammed up. And finally, I asked her to chew the cud for such an important decision. 我没说话，最后，我叫她仔细考虑这个重要的决定。
3. If they weren't good scientists, they kind of clammed up and kept doing what they were doing. 如果他们不是好的科学家，他们会选择沉默，继续做自己的事情。
4. He promised not to tell anyone the secret, so when people asked him about the thing, he just clammed up. 他保证不会告诉任何人这个秘密，所以只要有人问到这件事，他就闭嘴。
5. On a crucial call with analysts, Mr Cayne reportedly clammed up “like a deer in the headlights”, forcing colleagues to pretend he had left the room. 在一次与分析家们的重要通话中，据说凯恩先生“象一头在前灯里鹿一样”拒不开口，强迫同事们假装他离开了房间。
