pivoting

动词 pivot:

1. turn on a pivot
   同义词：pivot, swivel

1. He is very skilled at pivoting on his heel.
   他能非常熟练地以脚跟旋转。
2. A jointed or flexible device that allows the turning or pivoting of a part, such as a door or lid, on a stationary frame.
   铰链，折叶一种用于连接或转动的装置，使门或盖在固定框架上可借以摆动