Describes an individual who is deeply experienced in worldly affairs, often through cunning and deceitful means, and is exceedingly treacherous and sly in their actions; a wily old fox.
那位老商人老奸巨滑，总是能在复杂的交易中找到对自己最有利的空子。
That old businessman is exceedingly cunning and sly, always finding loopholes in complex transactions to his own greatest advantage.
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