high wire
noun
1- a high tightrope绷紧的绳索。
1.1
- as modifier figurative requiring great skill or judgement〈喻〉（需要）高超（技能）的, （需要）高明（判断）的：
it will take a financial high-wire balancing act to fund the requirements.
要为满足需要提供资金, 就必须采取高超的经济平衡措施。