on pins and needles
US /ɑn pɪnz ænd ˈniːdlz/
UK /ɑn pɪnz ænd ˈniːdlz/

1.
坐立不安, 緊張不安
in a state of anxious expectation; nervously awaiting something
:
•
I've been on pins and needles all day waiting for the test results.
我一整天都坐立不安,等待考試結果。
•
Everyone was on pins and needles as they watched the final penalty kick.
大家在觀看最後的點球時都緊張不安。