呕吐用英语可以说作 "vomiting"。这个词来源于拉丁语 "vomitus"，意思是"吐出的东西"。例句包括：

I feel like I'm going to throw up. 我感觉我要吐了。

She had a stomach bug and was vomiting all night. 她患了胃肠道感染，整晚都在呕吐。

The doctor recommended resting and drinking fluids to help with the vomiting. 医生建议休息并喝水以帮助呕吐。

希望这些信息对您有帮助。