H-28：hold one's tongue 保持沉默
A:Is he the man Jenny often goes out with?
A:他就是那个和珍妮经常一块儿出去的人吗？
B:Oh, yes. But hold your tongue. He's stealing a look at us.
B：哦，是的，但别吱声，他正偷看我们。
A:I can't imagine that they can hit it off with each other.
A:我真难想象他们竞能相处得很好。
B:Well, he's very well-learned man. He's a mind like a steel trap, you know?
B：他是个很有教养的人，你知道吗，他的脑子特别灵光。
