Your feet should be flat on the floor or supported by a footrest.
你的脚应该平放在地板上或用一个脚凳支持。
This means your neck and spine should be in a neutral position, shoulders and torso relaxed, knees bent at 90 degrees with both feet flat on the floor.
这也就是说你的脖子和脊柱应该处于中正的位置，肩膀和躯干放松，膝盖弯曲呈90度角，双脚平放在地面上。
If the model was younger, you may even see him lay flat on the floor with the feet in this position, but since there was nobody else around, he was afraid he wouldn't be able to get back up.
如果模型年幼的时候，你甚至可以看到他平躺在地上，双脚在这个位置，但是由于没有别的人四周，他怕他不可能重新站起来的人。
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