Lie on the roller with your knees bent and your feet on the floor, so the roller extends along your spine from your sitting bones to the top of your head.
双膝弯曲，两脚着地，躺在这个滚筒上，让它沿着你的脊柱，一直从尾骨到头顶。
2
Roller Blinds: If the tension device is not attached to the wall or floor, young children may pull the bead chain around their neck, posing a risk of strangulation.
卷轴帘：珠链如果没有用拉紧装置固定在墙上或是地板上，儿童可能会将珠链缠在脖子上，造成窒息的危险。
3
A plurality of lateral rollers are installed at both sides of the floor behind the main roller, and the lateral rollers are compressed on the edges of the plastic film.