为形容词breathless，中文意思是adj. 喘不过气来的；停止呼吸的She was hot and breathless from the exertion of cycling uphill.她骑车上山累得全身发热，喘不过气来。

I was a little breathless and my heartbeat was bumpy and fast.我有点上气不接下气,我的心跳不稳并且很快。

breath是名词

breath后加字母e，变成动词

breathe是动词，注意二者发音也有变化