She injured her spine in a fall and a doctor told her to lie flat on her back for a month so it can mend.
她摔伤了脊椎，医生让她平躺一个月以便恢复。
Lie on your back, feet flat on the floor, knees bent, hands at your sides.
整个背贴着躺在地上，脚板放平在地板上，两手放在身体两侧。
Lie on your back with your knees bent and feet flat on the floor.
背部着地，两膝弯曲，足平放于地面。
For variation, the woman can even lie completely flat, face down on the bed with her legs open, as her partner lies on top of her back, entering from behind.
如果要有所变化，女性可以完全平躺着，面部朝下，双脚打开，由趴在她背部的伴侣从后面进入。
How it works: Lie flat on your back. Hold the book above your head and read until your arms are sore.
怎么做：平躺下，仰卧。把书举到头部上方看，直到胳膊酸痛。
Rotational stretch. Lie flat on your back. Bring one leg up to a 90-degree angle and hold.
转动伸展。背部着地平躺，一条腿向上升呈90度，保持住。
I could only lie flat on my back with a pillow under my knees.
我只能平躺，并且要垫一个枕头在膝盖后面。
How to do it: lie flat on your back with one arm outstretched perpendicular to your body.
如何做：仰面平躺，单臂平伸并与身体垂直。
Lie on back, knees bent, feet flat on floor.
仰卧，膝关节弯曲，脚底平贴地面。
Lie on back, knees bent, feet flat on floor.
仰卧，膝关节弯曲，脚底平贴地面。
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