n.镇定剂,精神安定剂( tranquillizer的名词复数 );
例句:
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.
She's on ( ie is taking ) tranquillizers.
她经常使用镇静剂.
She tries on tranquillizers because of her nerves.
她因神经方面的毛病常服镇静剂.