N a volatile liquid obtained from petroleum and used as a local anaesthetic 利可冷; 一种从石油中提取的挥发性液体，用作局部麻醉剂
N（名词） a volatile liquid obtained from petroleum and used as a local anaesthetic 利可冷; 一种从石油中提取的挥发性液体，用作局部麻醉剂