主开关，总开关

房间配有灯光总控制器，将磁卡插入取电器内，灯光便会自动开亮，当您离开房间时，请取出磁卡，灯光便会自动开关。

Master of Arts

Master

Spead Master

master payroll data file【会计】

be meat for sb's master

between which the master is stretched

master file

master control room