back against the wall
背靠墙式安装 fixing with back to wall
背靠墙直角坐 Wall sit
背靠着墙 Against the wall
如果这么坐着有困难，就背靠墙坐吧。
If you have difficulty sitting like this, prop up your back against a wall.
youdao
do让……做了士兵们让那个男孩背靠墙站着。
The soldiers had the boy stand against the wall. have...
如果感觉在这个体式上不能稳定，将后脚跟或后背靠墙使自己得到支撑。
Brace your back heel or the back of your torso against a wall if you feel unsteady in the pose.
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