查词历史：
- tranquillizer tranquilize
n.
- 复数： tranquillizers
The spellings tranquilizer in American English, and tranquilliser in British English, are also used. 美国英语亦拼作 tranquilizer，英国英语亦拼作 tranquilliser。
1.
N-COUNT
安定药;镇静剂 A tranquillizer is a drug that makes people feel calmer or less anxious. Tranquillizers are sometimes used to make people or animals become sleepy or unconscious.
- Noun
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1. a drug used to reduce stress or tension without reducing mental clarity
心理学
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- 1.镇静剂
