The lighthouse on the top of the hill serves as a mark for fliers 山顶上的灯塔成了飞行员(识别地形)的标志。
2.
It ' s promulgation and implementation serves as a mark that the government personnel administration system of our country has been directed to a legal and scientific course 它的颁布和实施标志着我国政府人事管理制度开始纳入法制化、科学化的轨道。