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答案 1：
T-ere is no exact number for -ow -ny people are rig-t--anded / left--anded of t-e w-ole population just because t-e definition for bot- terms (rig-t -andedness and left -andedness) really -tters. T-e possible esti-tion of t-e proportion of left--anded - ranges from 8 to 15%, again, depending on -ow loosely t-e term "left -andedness" is defined. Reference @ -u-nforsale/left-vs-... and you can find more interesting facts t-ere.答案 2：
有看过，大概占百分之十这样的比例。分享常识给亲友.
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