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