研究人员用这些照片来测量老虎脚印的长度和宽度以及脚趾之间的角度，以及10种其他变量来确定不同老虎的“身份”。
The researchers then use the pictures to measure the length and width of each pugmark, the angle between toes, and 10 other variables to establish an ID.
所以，如果你没有用大脚趾站立(或者不能以其为中心转动脚)，那么就会导致你的身体像陀螺那样倾倒或者强迫你重新再踩点，便会加重疲劳以及颤抖。
Thus, if you don't stand (and rotate) over your big toe, your shoe will either pivot you off like a dreidel spun on its side or force you to reset your foot, increasing fatigue while you dither.
其实，穿鞋带来的麻烦可能比赤脚更多。 比方说，穿鞋可能导致脚部变形，脚趾向内生长以及脚癣。
In fact, there are more likely to be disadvantages and problems from wearing shoes than not wearing them - among them, deformation caused by a poor fit, ingrown toenails, and athlete's foot.
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