P-21:put a feeler to 试探……的反应
A:He said he know nothing about it.
A:他说他对此一无所知。
B:It was really silly of you to believe what he said.
B：你相信他说的话，真是太傻了。
A:Why do you say so?
A:为什么这么说？
B:Didn't you know that he was trying to put a feeler to you?
B：难道你不知道他还在试探你的反应吗？
