n.(尤指服用镇静剂而进入的)休息状态,睡眠状态
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。
The patient is sedated with intravenous use of sedative drugs.
静脉注射了镇静剂后病人安然入睡。
They use opium as a sedative, rather than as a narcotic.
他们把鸦片用作镇静剂而不是毒品。