be flat on the floor

常见例句

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。
Because flat is on the ground floor, I don't get a letter box. They told me to put my name on the door so letters can be slipped under. My friend helped to make the sticker in my name.
因为在一楼的原故，我没有信箱，他们告诉我把我的名字放在门上，可爱的意大利朋友帮我作了贴纸。
magslu.spaces.live.com