n.铁环
v.掷圈环
(复）quoits: 掷环套桩游戏.
These oil fields contain many oil quoit and there are on enough oil and gas and there are complicated characteristic. 这些油田具有多层系含油、多种圈闭类型、油气富集程度不均，油气水纵向、横向关系复杂的特点。
ring a quoit (投环游戏)投环
buoyant rescue quoit 救生索浮圈
rope quoit 吊环
quoit kwCit, kweit n.；vt. n. 金属环, 铁环, 绳圈；
