讲解文本：

on pins and needles 坐立不安，如坐针毡
I am going to be on pins and needles until I get that phone call from her.
在她给我打电话之前，我肯定要一直坐立不安了。
He tried to look calm but everybody knew he was on pins and needles.
他想装得很平静，但每个人都知道他很紧张。

疯狂练习吧！