"Actually, that isn't what happened," George corrects me.“实际上，并不是那样，”乔治纠正我。An equipment that corrects the time base errors in video tape recorders.一种校正视频磁带记录器中时基误差的设备.Wang Ping: If I say something wrong, Jeff correc...
地球的周日自转the diurnal rotation of the earth地球每天的自转the daily rotation of the earth on its axis地球既公转又自转.The earth revolves both round the sun and on its own axis....