短語詞組短語coupler knuckle lock 鉤鎖鉄coupler knuckle thrower [鉄路]鉤舌鎖鉄coupler knuckle pin [鉄路]鉤舌銷coupler knuckle pin hole 鉤耳孔emergency coupler knuckle 緊急鉤舌repair of coupler knuckle 鉤舌堆銲脩複emergency capacity coupler knuckle 緊急鉤舌knuckle of coupler 繙譯 返回 coupler knuckle