柯林斯詞典sedative /?s?d?t?v/ (sedatives) 1. N-COUNT A sedative is a medicine or drug that calms you or makes you sleep. 鎮(zhèn)靜劑 They use opium as a sedative, rather than as a narcotic. 他們把鴉片作為鎮(zhèn)靜劑，而不是作為麻醉劑。 返回 sedative劍橋詞典a drug used to calm a person or animal or to make them sleep 鎮(zhèn)靜藥；鎮(zhèn)靜劑 返回 sedative