The vehicles will roll over onto thedrivers, or they'll hit a tree or another ATV and break an arm or a leg.
这种车会滚在开车人的身上，或者撞到树上，再或者撞在别的ATV上，造成开车的人胳膊和腿断裂。
Once she is re-positioned comfortably, roll yourself back to your original position and you should find you have the freedom to remove your arm easily.
等她换了姿势安稳地睡着之后，你可以自由地活动你的手臂然后回到你原来的姿势睡觉了。
Two muscles, the infraspinatus and teres minor, connect the shoulder blade to the upper arm bone and roll the arms outward.
冈下肌和小圆肌这两块肌肉，将肩胛骨和上臂连接起来，使手臂外旋。
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