1
take a tranquillizer
take 是表示“服药”的常用动词。
She took a tranquillizer to calm down before her flight.
她在乘飞机前服了一粒镇静剂来平静下来。
镇静剂；安定药
先理解核心含义，再看它在真实句子里的用法。
镇静剂；安定药
a drug used to reduce stress or tension without reducing mental clarity
She took a tranquillizer to calm down before her flight.
她在乘飞机前服了一粒镇静剂来平静下来。
镇静剂；安定药
n a drug used to reduce stress or tension without reducing mental clarity
After the accident, the doctor gave her a mild tranquillizer to help her sleep.
事故发生后，医生给她开了一种温和的镇静剂帮助她入睡。
The vet prescribed a tranquillizer for the nervous dog before its check-up.
兽医在给那只紧张的狗做检查前开了镇静剂。
He keeps a tranquillizer in his bag for long flights, but he rarely needs it.
他在包里放了一粒安定药以备长途飞行时使用，但他很少需要它。
take 是表示“服药”的常用动词。
She took a tranquillizer to calm down before her flight.
她在乘飞机前服了一粒镇静剂来平静下来。
prescribe 的主语通常是医生，宾语是药物，用 for 引出治疗对象。
The doctor prescribed tranquillizers for his anxiety.
医生为了治疗他的焦虑症开了安定药。
be on 表示持续服药的状态。
He has been on tranquillizers since the accident.
自从那次事故后，他一直在服用镇静剂。
Not this
The doctor gave me a tranquil to help me sleep.
Use this
The doctor gave me a tranquillizer to help me sleep.
tranquil 是形容词，表示‘平静的’；表示‘镇静剂、安定药’应用名词 tranquillizer。这里需要名词作宾语。
Not this
She bought tranquillizer from the pharmacy.
Use this
She bought a tranquillizer from the pharmacy.
tranquillizer 是可数名词，单数形式前需要不定冠词 a/an，不能像中文那样省略量词。
Not this
This pill can tranquillizer my anxiety.
Use this
This pill can tranquillize my anxiety.
tranquillizer 是名词，表示‘镇静剂’；表示‘使镇静’应用动词 tranquillize。注意词尾：动词是 -ize，名词是 -izer。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
开镇静剂处方
The doctor prescribed a tranquillizer to help her sleep.
医生给她开了镇静剂帮助入睡。
服用镇静剂
He takes a tranquillizer before the flight.
他登机前服用一粒镇静剂。
镇静剂注射
The vet gave the dog a tranquillizer injection.
兽医给狗打了一针镇静剂。
麻醉镖
The ranger used a tranquillizer dart to sedate the lion.
护林员用麻醉镖让狮子镇静下来。
温和的镇静剂
It's only a mild tranquillizer, not a strong sleeping pill.
那只是温和的镇静剂，不是强效安眠药。
Use tranquillizer naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
tranquil 意为“平静”，-izer 表示“使…的东西”，联想吃过药后内心平静安宁，即为镇静剂。
语域：formal 常见场景：医疗、药学文献、正式写作 该词多用于医疗、药学等正式场合，属于比较正式的术语；日常口语中通常较少使用，更常见说 sedative 或 calming medication。
stabilizer、fertilizer、analyzer、colonizer 和 tranquillizer 一样以 /laɪzə/ 结尾；vaporizer、organizer 以 -izer 结尾，读 /aɪzə/，但前面辅音不同。注意 tranquillizer 中的 qu 读 /kw/，不是 /k/；tranquil（/ˈtræŋkwɪl/）和 tranquility 虽形近，读音和重音不同。
Dictionary facts from ECDICT, WIKTIONARY.