Morphine , derived from opium , is used in medicine as an analgesic , light anesthetic or a sedative 从鸦片中提取出来的吗啡通常被用作止痛剂、轻度麻醉剂或是镇静剂。
He was unable to sit still for more than a few minutes and sleep was impossible even with intravenous sedatives 他不能静坐数分钟以上，即使静脉注射镇静剂，也不能睡觉。
It ' s nothing serious . the pain is probably due to indigestion . i ' ll give him a sedative to quiet him down 看来没什么大问题,多半是因为消化不良。我给他一点镇静剂使他安静。
Carbon dioxide retention is a major . restriction to the use of sedatives tranquilizers or narcotics in heart failure 二氧化碳蓄积是对心力衰竭限制使用镇静安定或麻醉等药物的主要原因
Any of various sedative narcotics containing opium or one or more of its natural or synthetic derivatives 鸦片制剂一种含有镇静性的麻醉剂，含有鸦片或一种或多种自然或人工合成的衍生物
" i ' m not really terribly nervous , " she said before the show . " being pregnant is like taking a sedative . 在红毯秀开始前，她说： “我并没有那么紧张，其实怀孕的感觉就像打了镇静剂一样。 ”
Objective to make a preliminary study on the sedative and hypnotic effects of the water extract of fructus schisandrae chinensis 摘要目的对北五味子水提取物镇静、催眠药理作用进行初探。
Carbon dioxide retention is a major . restriction to the use of sedatives ， tranquilizers ， or narcotics in heart failure 二氧化碳蓄积是对心力衰竭限制使用镇静、安定或麻醉等药物的主要原因。
The risks of giving older people sleeping pills and other sedatives outweigh the benefits , researchers have said 很多60岁以上的老年人都受到了失眠症的困扰，这严重影响到了他们的生活质量。
Nembutal sodium exerts a depressant action on the cns and shares the sedative - hypnotic actions typical of the barbiturates 戊巴比妥钠对中枢神经系统产生抑制作用，并显示戊巴比妥类特有的镇静催眠作用。
