mandatory

adj. 命令的，强迫的

man-hour, man-hunt, man-killer, man-like, man-made, man-of-war, man-powered, man-size (also man-sized), manacle, manage, manage to do, manageable, management, manager, manageress, managerial, managing director, mandarin, mandate, mandated, mandible, mandolin, mandragora, mandrill, mane, maneuver, manful, manfully, manganese, mange, mangel-wurzel, manger, mangle, mango, mangrove, mangy, manhandle, manhole, manhood, mania,