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。

《柯林斯英汉双解大词典》

Rapid heartbeat met you, but could not you feel bad, dream of you time flies too fast, have you hope it is not a long wait.

遇到你心跳加快，不见你心情变坏，梦见你时间过得太快，拥有你但愿不是漫长的等待。

youdao

Encountered your heartbeat, not you feel bad, and dream of your time wandering too fast, have you not a long wait?

遇到你心跳加快，不见你心情变坏，梦见你时间溜得太快，拥有你是不是漫长的等待？

youdao

Heat exhaustion may also produce a feeling of sickness, a fast heartbeat,breathing problems and pain in the head,chest or stomach.

VOA: special.2010.07.27