perigee altitude

例句：

1. 1. The satellite's perigee altitude is200 kilometers above the Earth's surface.
   这颗卫星的近地点高度是地球表面200公里处。
2. 2.The astronauts were able toreach their perigee altitude of400 kilometers before re-entryinto the atmosphere.
   宇航员能够在进入大气层前达到他们的近地点高度400公里。
3. 3. The spacecraft's trajectorywas carefully calculated to ensure it reached itsperigee altitude safely.
   该航天器的轨迹被仔细计算以确保它安全地达到其近地点高度。