geostationary orbit

剑桥词典

an orbit (= path travelled around an object in space ) in which a satellite always remains over the same place on the earth's surface because it moves at the same speed as the earth turns
（同步衛星的）（地球）同步軌道；（對地）靜止軌道（太空中，圍繞某一物躰而運行的軌道，人造衛星因爲和地球運轉速度一致，其在地球表麪的運轉軌跡保持不變） 返回 geostationary orbit