put to sleep 1. 使入睡；(给人服药、酒、或打麻醉针)让(其)昏迷 The soft music put her to sleep. 轻柔的音乐使她入睡。 2. 无痛苦地处死(生病的动物等) put a pet cat to sleep 使宠猫无痛苦地死去 3. 消除，打消 You always seemed so well-behaved that my fears were put to sleep. 你看上去总是这么举止得体，我的担心也就打消了。 4. 【计】让(计算机)处于睡眠状态 5. = send to sleep