administer a vomitive to sb
较正式的医学说法；日常英语中也可说 give sb a vomitive。
The vet administered a vomitive to the puppy.
兽医给小狗喂了催吐剂。
引起呕吐的东西
引起呕吐的东西
Something that induces vomiting
The doctor prescribed a vomitive to empty the patient's stomach after the poisoning.
医生开了一种催吐剂，让病人在中毒后清空胃部。
用法提示：vomitive 作可数名词单数，表示催吐剂。
Some older treatments relied on vomitives to make patients expel harmful substances.
一些旧时的治疗方法依赖催吐剂让病人排出有害物质。
用法提示：vomitives 是 vomitive 的复数形式，仍作名词，指多种催吐药物。
The pharmacist warned that a vomitive should never be taken without a doctor's instruction.
药剂师警告说，没有医生的指导绝不能服用催吐剂。
用法提示：此处 a vomitive 为单数名词，指特定的一种催吐剂。
较正式的医学说法；日常英语中也可说 give sb a vomitive。
The vet administered a vomitive to the puppy.
兽医给小狗喂了催吐剂。
as 后接名词，用来说明某物被当作催吐剂使用。
Salt water was once used as a vomitive.
盐水曾被用作催吐剂。
vomitive 是可数名词，复数 vomitives 常泛指这一类物质。
Not all vomitives work in the same way.
并非所有催吐剂的作用方式都一样。
grammar · medium
易错句子The doctor gave him vomitive to empty his stomach.
正确表达The doctor gave him a vomitive to empty his stomach.
vomitive 是可数名词，单数泛指时需要不定冠词 a；汉语名词没有冠词，学习者容易漏掉。
grammar · medium
易错句子The nurse gave him two vomitive before the procedure.
正确表达The nurse gave him two vomitives before the procedure.
vomitive 是可数名词，受数词 two 修饰时须用复数 vomitives；汉语名词无复数词尾，容易漏加 -s。
grammar · medium
易错句子The spoiled fish was vomitive.
正确表达The spoiled fish acted as a vomitive.
vomitive 是名词，不能像形容词一样直接作表语来描述食物；要表达“起催吐剂的作用”，需用名词结构 act as a vomitive，其中 a 也必不可少。
两者都指能引起呕吐的物质，但 emetic 是现代医学和日常英语里的标准说法，vomitive 罕见、偏书面且带古旧色彩；日常或临床表达一般用 emetic。
vomitory 作名词主要指体育场、剧场供人群进出的通道，只有作形容词时才表示“催吐的”；用它当名词指催吐剂是错的，不要与 vomitive 混用。
vomit 指呕吐这个动作或吐出来的东西，不能指引起呕吐的药物；要表达“催吐剂”这一物质，应用 vomitive 或 emetic。
动词/名词；vomit（词根）
名词；vomit + -ing
名词；vomit + bag（复合词）
形容词；vomit + inducing（复合词）
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