tranquillizer

名词 tranquillizer:

1. a drug used to reduce stress or tension without reducing mental clarity
   同义词：tranquilizer, tranquilliser, antianxiety agent, ataractic drug, ataractic agent, ataractic

1. Doctors are still at issue over the proper use of tranquillizers.
   医生们对如何适当使用镇静剂的问题意见仍不一致。
2. She's on (ie is taking) tranquillizers.
   她经常使用镇静剂。