Hence, in his intercourse with Chang, he was sufficiently unpreoccupied to see in him a mannered old gentleman who might not be entirely trustworthy, but who was certainly of high intelligence.

因此，在与张的交往中，他完全不心不在焉地在他身上看到了一个彬彬有礼的老先生，这个老先生可能不完全值得信赖，但肯定是高智商。