collywobbles 肠胃不适，忧虑（名词）

英文释义
(noun) Nervous, jittery feeling in the stomach because of fear, sometimes causing severe queasiness.

例句

Before making a speech to a large group of people, I used to get a bad case of the collywobbles, but now speechmaking doesn't bother me.
过去，在向一大群人做演讲之前，我常常感到严重的忧虑，但现在做演讲对我来说不再是麻烦事了。