Slot your foot (big toe up, pinky toe down) into the crack up to the arch of your foot, keeping your knee out to the side.
把你的脚尖（大脚趾在上，小指在下）楔入裂缝中去，直到你的足弓的部分，膝盖保持向外。
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Statisticians everywhere are squealing in delight over this story on fellow statistician Mohan Srivastava,who used his know-how to crack the code of a tic-tac-toe scatcher lottery game.
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses were given out.