tightrope
noun /ˈtaɪtrəʊp/
  /ˈtaɪtrəʊp/
Idioms - a rope or wire that is stretched tightly high above the ground and that performers walk along, especially in a circus(尤指马戏团表演用的)绷紧的绳索,绷紧的钢丝 - a tightrope walker走钢丝演员 
 Collocations DictionaryTightrope is used before these nouns:- walk
 
- a tightrope walker
Idioms 
tread/walk a tightrope 
- to be in a difficult situation in which you do not have much freedom of action and need to be extremely careful about what you do身处困境;如履薄冰 - The government is walking a difficult tightrope in wanting to reduce interest rates without pushing up inflation.政府想在不推高通胀的情况下降低利率,这是在走一条艰难的钢丝。 
 
- The government is walking a difficult tightrope in wanting to reduce interest rates without pushing up inflation.