tranquillize
(US also tranquilize), tranquilise , v [Tn]
make (a person or an animal) calmer or sleepy, esp by means of a drug 使(人或动物)安静或入睡(尤指用药物)
The game wardens tranquillized the rhinoceros with a drugged dart. 猎物保护区管理员用麻醉射器让犀牛静了下来.
the tranqullizing effect of gentle music 轻柔的音乐具有的安眠作用.