swivel
/ˈswɪvl; `swɪvl/ n
(esp in compounds 尤用以构成复合词) link or pivot between two parts enabling one part to revolve without turning the other 转环; 转节; 旋转接头; 旋轴
a swivel-chain, -hook 转动链、 转动钩
a swivel-chair, ie one that rotates 转椅. swivel, v (-ll-; US -l-) [I, Ip, Tn, Tn.p]
~ (sth) (round) (cause sth to) turn on or as if on a swivel （使某物）（似）在旋轴上转动
He swivelled (round) in his chair to face us. 他把坐著的转椅转过来面向著我们.
She swivelled the telescope (round). 她用望远镜向四周看.