But then, he didn't have any idea what his real answers would have been, then or now. So it isn't as if he knew himself any better.
不过，无论那时还是此刻，他从不知道自己真正的答案会是什么，所以他也不怎么了解自己。
Many of the men I spoke with had worked as electricians or builders; one had been a successful real-estate agent.
我与之谈话的男人中，大多数是电工或建筑工人，其中一人曾是成功的房地产经纪人。
Other real-time systems use algorithms to detect suspicious behaviour, such as a group loitering near a door where entry is barred, or to spot items of luggage that seem to have been left unattended.
其它实时系统则利用一些算法来检测可疑的行为，比如一群人在一条被封住入口的门边徘徊，抑或定位那些看起来被人落下无人看管的行李物品。
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