tightrope
剑桥词典
- a tightly stretched wire or rope fixed high above the ground , across which skilled people walk , especially in order to entertain others
（尤指用于娱乐表演的）绷紧的钢丝（或绳索）
One of the acrobats who walked the tightrope at the circus did it blindfolded . 马戏团里走钢丝的杂技演员中有一位是蒙着眼睛走的。