A man with a wife and children can't afford to be thoughtless of the future.

一个有妻子儿女的人不可能不考虑到未来。

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If users on the whole could be elevated above such thoughtless acceptance of poor security practices, we would have taken significant steps toward solving the malware problem.

如果用户总体上可以提高上述这种轻率接受、安全性差的做法，我们将采取重大步骤，解决恶意软件问题。

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Don't be so thoughtless of other people.

不要对别人这样不亲切。

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Alonso was furious after almost colliding with a slow-moving Rosberg on the racing line, and the Mercedes' driver may find himself required to answer to the race stewards for what appeared to be a thoughtless piece of driving.

BBC: Robert Kubica fastest in final practice in Korea