词汇	event elective courts
释义	event elective courts 选项课
随便看	earth-standard earthstar earthstars earth stars earthstation earth station earth station antenna earth stationary orbital keeping earth station availability earth station congo earth station disks Earth Station-Ecuador Earth Station-Egypt earth station engineering control center earth station equipment earth station equipment noise earth station facility earth station for satellite communication Earth Station-Greece Earth Station-Hongkong Earth Station-Hong Kong earth station in the fixedsatellite service Earth Station-Iran Earth Station-Israel Earth Station-Ivory Coast