C-11：clam up沉默不语
A:When Joe and Lisa were splitting in each one's throat, why did you clam up without speaking up for Lisa?
A:当乔和莉莎吵得不可开交时，你为何沉默不语，不帮莉莎说话？
B:I could not put in a word in edge ways. They came on each other like a lon of bricks.
B:我根本插不进嘴，他们吵得那么激烈。
A:But you should stand up for Lisa. You should be fair and square.
A:但你必须站出来为莉莎说话的，你应该主持公道。
B:I do not take side with anyone unless I'm sure of what I'm doing.
B：除非我清楚自己在做什么，否则我不会站在任何人一边。
