1
noun + iv
罗马数字iv常大写为IV，但此处按词条使用小写。
chapter iv
第四章
四
先理解核心含义，再看它在真实句子里的用法。
四
the number four
chapter iv
第四章
The nurse started an IV in the patient's arm to give him fluids.
护士在病人手臂上扎了静脉输液管，为他补充液体。
After the operation, the patient needs an IV to receive nutrients.
手术之后，病人需要静脉输液来获取营养。
Because she was dehydrated, the doctor gave her an IV immediately.
因为她脱水了，医生立即给她进行了静脉输液。
罗马数字iv常大写为IV，但此处按词条使用小写。
chapter iv
第四章
医学中常缩写为IV。
iv drip
静脉滴注
Not this
I am on IV.
Use this
I am on an IV.
中文缺乏冠词，英语中‘IV’（静脉注射）以元音音素开头，需用不定冠词‘an’表示‘一个静脉输液管’。
Not this
I have IV apples.
Use this
I have four apples.
罗马数字‘IV’仅用于序数编号（如章、国王、年份），不可替代基数词‘four’修饰普通名词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
静脉滴注
The patient was put on an IV drip to rehydrate.
病人接受了静脉滴注以补充水分。
静脉输液管
The nurse inserted an IV line into his arm.
护士在他的手臂上插入了一根静脉输液管。
静脉注射液
She received IV fluids after surgery.
手术后她接受了静脉注射液。
静脉注射
The doctor gave him an IV injection of antibiotics.
医生给他注射了静脉抗生素。
静脉治疗
IV therapy is commonly used for dehydration.
静脉治疗常用于脱水。
静脉抗生素
He was started on IV antibiotics for the infection.
他因感染开始使用静脉抗生素。
《齐柏林飞艇IV》是英国摇滚乐队齐柏林飞艇的第四张录音室专辑，通常简称为IV。
Many consider 'Stairway to Heaven' from Led Zeppelin IV to be one of the greatest rock songs.
很多人认为《齐柏林飞艇IV》中的《天堂阶梯》是最伟大的摇滚歌曲之一。
Use iv naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
罗马数字IV表示4，静脉注射也缩写为IV，看到iv联想到两者。
Technical; typically used in medical settings for intravenous therapy or injection. 通常用于医疗语境，指静脉注射，属于比较技术的术语，但在临床对话中也较常见。
iv 是缩写，作为名词时指静脉注射或数字4，作为形容词时表示“四”或“静脉注射的”
Dictionary facts from ECDICT, WIKTIONARY.