David is in motion. The position he is in is known as contrapposto or counterpose.

大卫在行动。他所处的姿势被称为对位或反位。

David had to be in the contrapposto position so that his legs would fit around the large hole already in the marble.

大卫必须处于一个立式平衡的位置上，这样他的腿才能绕住大理石上已经存在的那个大洞。