零宽断言_百度百科 - 0 views
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(?=exp)也叫零宽度正预测先行断言
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比如\b\w+(?=ing\b)
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比如(?<=\bre)\w+\b
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1. When you are looking at someone you love, your pupils dilate, and they do the same when you are looking at someone you hate. 2. The human head is one-quarter of our total length at birth but on...