there is a lot fo butterflies in my stomach?

there is a lot fo butterflies in my stomach?
there is a lot fo butterflies in my stomach?

there is a lot fo butterflies in my stomach?
butterflies in my stomach 肚里有只蝴蝶（心里紧张,七上八下）

我的心里觉得非常紧张
butterflies in my stomach 因害怕而引起的紧张

心里七上八下.