干呕 meaning in English

dysemesia; vomiturition; retch

He listened to the starter retching and retching, the racing of the engine, and then the slow decline to silence .
他听着汽车的起动器干呕了两声，接着马达发动起来，声音逐渐消失在远处。
I was busy dry heaving
我那时正在干呕
What are the definitions of nausea , retching , and vomiting / emesis , and how are they different from one another
恶心、干呕、呕吐的定义是什么？他们之间相互的区别是什么？