Stand with your toes on the edge of a step, facing towards the step, so that your heels are hanging off the back.
以脚尖站立立于台阶的边缘。面朝台阶，脚后跟的后部悬起。
See the first athlete, he took a step back, a handsome action, and facing the lever blunt past, spurt, a strong start, light foot stand, lift up body, in the past.
只见第一个运动员，他往后退了一步，一个帅气的动作，然后正对着横杆冲过去，加速冲刺，一个轻快有力的起跑，脚一踮，身体腾空起来，过去了。 。
Facing up to your debts is the first step to getting back on an even keel.
正视你的债务是第一步，以找回对一，甚至龙骨。
The flow over a backward facing step of an annular tube is a very important part of air drilling, determining the detritus going back to the ground successfully.
环空管道后台阶突扩流动是空气正循环钻井过程中十分重要的关键部分，直接决定了钻探岩屑是否能够顺利上返地面。
The flow over a backward facing step of an annular tube is a very important part of air drilling, determining the detritus going back to the ground successfully.
环空管道后台阶突扩流动是空气正循环钻井过程中十分重要的关键部分，直接决定了钻探岩屑是否能够顺利上返地面。
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