物质基础，至少应该把一只脚以后前后这个基地的宽度墙。
The foundation material should extend at least one foot beyond the front and back of the base width of the wall.
站在你的脚肩宽度分开。
站立的时候保持你的双脚间有肩膀的宽度，而且让膝盖和脚朝前。
Stand with feet shoulder-width apart and knees and feet facing forward.
确保买之前每只脚的长度和宽度都被测量。
Be sure that the length and width of each foot are measured before you buy anything.
向后采取一个步骤而且放置你的脚肩-宽度分别地，并肩的，借由被指出的你的脚趾向前的或者些微地向外的。移转在你的脚后跟上的你的重量。
Take a step backwards and position your feet shoulder-width apart, side-by-side, with your toes pointed forward or slightly outward. Shift your weight over your heels.
向后采取一个步骤而且放置你的脚肩-宽度分别地，并肩的，借由被指出的你的脚趾向前的或者些微地向外的。移转在你的脚后跟上的你的重量。
Take a step backwards and position your feet shoulder-width apart, side-by-side, with your toes pointed forward or slightly outward. Shift your weight over your heels.
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