我们谈了半个小时的邮票，还看他儿子的相片。随后，不需要我再开口了。他费了一个小时以上的时间，提供出各项我所需要的资料。

• We spent half an hour talking stamps and looking at a picture of his boy,and he then devoted more than an hour of his time to giving me every bit of information I wanted - without my even suggesting that he do it.