吊索的英文：
crowfoot

cross bar sling
横杆吊索

risk of sling damage
吊索损险

The part of a yard between the slings and the yardarm.
吊索与桁端间的一码的部分

Length of rope,strap,chain,etc looped round an object(eg a barrel)to support or lift it
吊具,吊索,吊链(用以悬挂或提起物体,如圆桶的).

They used slings of rope to lower us from one set of arms to another.
他们用吊索把我们从高处的一组吊臂上放到低处的另一组吊臂上。