tenterhooks
noun [ plural ] uk/ˈten.tə.hʊks/ us/ˈten.t̬ɚ.hʊks/
on tenterhooks 提心吊胆的，焦虑不安的，如坐针毡的
worried or nervous about something that is going to happen
We were on tenterhooks all morning waiting for the phone to ring. 我们整个上午都如坐针毡，一直在等着电话铃响。