produce vomitus
The patient produced vomitus after eating spoiled food.
病人吃了变质的食物后产生了呕吐物。
呕吐物
呕吐
医学用语，不可数
呕吐物。
Vomit (the product of an emesis).
呕吐物
the matter ejected in vomiting
The doctor ordered a test on the vomitus to check for infection.
医生要求对呕吐物进行检测以检查是否有感染。
用法提示：作为不可数名词，表示呕吐物，常用于医疗语境。
They found undigested food in the vomitus.
他们在呕吐物中发现了未消化的食物。
用法提示：作为不可数名词，直接作为主语或宾语使用。
The presence of bile in the vomitus indicates a possible intestinal blockage.
呕吐物中出现胆汁表明可能存在肠梗阻。
用法提示：作为不可数名词，用于描述医学症状。
The patient produced vomitus after eating spoiled food.
病人吃了变质的食物后产生了呕吐物。
常用动词包括 contain, show, indicate 等。
The vomitus contained traces of undigested medication.
呕吐物中含有未消化的药物痕迹。
A sample of vomitus was sent to the lab for analysis.
呕吐物样本被送往实验室进行分析。
The vomitus from multiple patients was collected for study.
来自多名患者的呕吐物被收集用于研究。
grammar · medium
易错句子He vomitus after eating.
正确表达He vomited after eating.
Vomitus 是名词，指呕吐物，而动词形式是 vomit。这里需要用过去式 vomited 表示动作。
grammar · medium
易错句子There were several vomitus on the floor.
正确表达There was vomitus on the floor.
Vomitus 是不可数名词，不能与不定冠词或复数形式连用，应使用单数谓语 was。
vomit可指呕吐动作或呕吐物，而vomitus仅指呕吐物；在医学语境中vomitus更正式、特指已排出的呕吐物。
emesis指呕吐的动作或过程，而vomitus指呕吐出的物质。
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