tightrope
n
1 rope stretched tightly high above the ground, on which acrobats perform (供杂技演员表演用的) 紧的绳索或钢丝
[attrib 作定语]
a tightrope walker 走钢丝的演员.
2 (idm 习语) tread/walk a `tightrope have to act in a situation which allowslittle scope for manoeuvre and in which an exact balance must be preserved 无甚回旋余地需小心权衡行事.