1
morphine is used to [do something]
morphine通常作不可数名词；词典给出的复数形式为morphines。
Morphine is used to relieve severe pain in hospital patients.
吗啡用于缓解住院病人的剧痛。
吗啡
先理解核心含义，再看它在真实句子里的用法。
吗啡
an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain
Morphine is used to relieve severe pain in hospital patients.
吗啡用于缓解住院病人的剧痛。
一种从鸦片中提取的结晶状生物碱(4,5-环氧-17-甲基-7,8-二脱氢吗啡喃-3,6-二醇),其盐类溶于水,用作镇痛药、麻醉药和镇静药；是吗啡类生物碱之一。
A crystalline alkaloid (4,5-epoxy-17-methyl-7,8-didehydromorphinan-3,6-diol), extracted from opium, the salts of which are soluble in water and are used as analgesics, anaesthetics and sedatives; it is one of a group of morphine alkaloids.
After the operation, the doctor gave her a small dose of morphine to reduce the pain.
手术后，医生给了她一剂小剂量的吗啡来减轻疼痛。
Morphine is only used for patients who are in severe pain.
吗啡仅用于处于剧烈疼痛中的病人。
The nurse adjusted the morphine drip before the surgery.
护士在手术前调整了吗啡滴注。
morphine通常作不可数名词；词典给出的复数形式为morphines。
Morphine is used to relieve severe pain in hospital patients.
吗啡用于缓解住院病人的剧痛。
give后接人作间接宾语时，也可说give morphine to somebody。
The nurse gave him morphine after the operation.
护士在手术后给了他吗啡。
take表示口服；若指注射可用inject。
He takes morphine for his chronic back pain.
他服用吗啡来缓解慢性背痛。
吗啡具有成瘾性，因此addicted to morphine是常见搭配。
The patient became addicted to morphine after months of treatment.
这位患者在治疗数月后对吗啡上瘾了。
Not this
He ate morphine to relieve his pain.
Use this
He took morphine to relieve his pain.
英语中表示服药或用药，常用动词 take，不用 eat；eat 指吃食物，不用于药物。
Not this
She is addicted with morphine.
Use this
She is addicted to morphine.
表示“对……上瘾”时，形容词 addicted 后必须接介词 to，不接 with；这是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
硫酸吗啡
The doctor prescribed morphine sulfate for the patient's severe pain.
医生为缓解病人的剧痛开了硫酸吗啡。
给（病人）施用吗啡
Nurses administered morphine to ease the soldier's suffering.
护士给士兵施用吗啡以减轻其痛苦。
吗啡注射剂；注射吗啡
He received a morphine injection to reduce the pain.
他注射了一针吗啡来减轻疼痛。
吗啡成瘾
Morphine addiction can develop quickly with repeated use.
反复使用吗啡很快就会成瘾。
吗啡过量
A morphine overdose can slow breathing to dangerous levels.
吗啡过量会使呼吸减缓到危险程度。
吗啡静脉滴注；吗啡点滴
The hospice team set up a morphine drip to keep the patient comfortable.
临终关怀团队为病人进行吗啡静脉滴注，以使其保持舒适。
吗啡姐姐，你是我需要的一切。
The doctor prescribed morphine to relieve the severe pain after surgery.
医生给他开了吗啡来缓解手术后的剧痛。
Use morphine naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
morphine 谐音‘吗啡’，联想医院里注射止痛药的情景，记住它是麻醉镇痛剂。
语域：formal 常见场景：medical reports、pharmacology、clinical settings 吗啡是医学和药理学领域的正式用词，通常出现在医疗记录、药品说明或学术文献中，日常口语中较少使用。
“morphine”以非重读的 /fiːn/ 结尾，caffeine /ˈkæfiːn/、codeine /ˈkəʊdiːn/、chlorine /ˈklɔːriːn/ 也都有类似的 /iːn/ 尾音，但重音所在元音不同，所以不算整词押韵。注意拼写相近但发音不同的词：dolphin /ˈdɒlfɪn/、famine /ˈfæmɪn/、heroin /ˈherəʊɪn/ 的尾音是 /ɪn/，不是 /fiːn/。
Dictionary facts from ECDICT, WIKTIONARY.