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1·They use opium as a sedative, rather than as a narcotic.

他们把鸦片作为镇静剂，而不是作为麻醉剂。《柯林斯英汉双解大词典》

2·It's safe to take a mild sedative.

服用药性不强的镇定剂没有危险。《牛津词典》

3·The sedative makes people very somnolent.

镇定药让人昏昏欲睡。《柯林斯英汉双解大词典》

4·The patient is sedated with intravenous use of sedative drugs.

这名患者在静脉注射了镇静剂后镇静了下来。《柯林斯英汉双解大词典》

5·Also, television can be like a sedative.

同时，电视可以像镇静剂。

6·The effects of the sedative have gone off.

止痛药的药效已经过期。

7·The doctor injected the sedative into his body.

医生给他注射镇静剂。

8·What are the sedative effects of alpha 2 agonists?

2受体激动剂的镇静效果机理是什么?。

9·The doctor prescribed a sedative to calm her down.

医生开了些镇静剂使她安定下来。

10·The plant ACTS as a sedative in treating neuralgia.

这种植物被用作治疗神经痛时的镇静药。