geostationary orbit

劍橋詞典

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(wèi)星的）（地球）同步軌道；（對(duì)地）靜止軌道（太空中，圍繞某一物躰而運(yùn)行的軌道，人造衛(wèi)星因爲(wèi)和地球運(yùn)轉(zhuǎn)速度一致，其在地球表麪的運(yùn)轉(zhuǎn)軌跡保持不變） 返回 geostationary orbit