求翻译：由仰卧的位置开始，尽量地向外侧展开双腿，然后慢慢地还原，左右腿分别反复进行10次，同时需要注意在进行动作的过程中，背部是不能够离开地面的。是什么意思？

From the supine position, try to start the legs to the outside, then slowly restored, so the legs were repeated 10 times, and needs to pay attention during the course of action, the back is not able to leave the ground.

The supine position as far as possible, to start on the outside, and then slowly restore legs legs around, respectively, at the same time the need has repeated 10 times in the process when attention, the back is not able to leave the ground.

By position start which lies supine, as far as possible launches the both legs to the flank, then returns to original state slowly, the left right leg distinction carries on repeatedly 10 times, simultaneously needs to pay attention in carries on the movement in the process, the back cannot leave th

Starting from the supine position, lateral to the legs as far as possible, and then slowly restored, left and right leg respectively, repeated 10 times, require attention in the course of action, the back is not able to leave the ground.

Starting from the supine position, lateral to the legs as far as possible, and then slowly restored, left and right leg respectively, repeated 10 times, require attention in the course of action, the back is not able to leave the ground.