习惯用语apple knocker1.采水果的临时工2.乡下人, 老实人3.生手face the knocker1.[俚]讨饭, 求乞on the knocker1.[英俚]挨户访问, 挨户售货, 赊账up to the knocker1.完全地, 十分地, 无可非议地2.健康正常3.非常时髦特殊用法air knocker1.气力抖动器, 气力抖落器coke knocker1.除焦机jar knocker1.打捞工具row knocker1.平垄器shell knocker1.敲击器tree knocker1.果实抖落器