Agenaclass lunar orbiter

例句：

1. 1. The Agenaclass lunar orbiter successfully landed onthe moon's surface.
   阿格纳级月球轨道飞行器成功地在月球表面着陆。
2. 2.The Agenaclass lunar orbiteris equipped with advanced propulsion systemsfor long-duration missions.
   阿格纳级月球轨道飞行器配备了先进的推进系统，用于长时间的任务。
3. 3. The Agenaclass lunar orbiter was used to study thegeology and environment of the moon's surface.
   阿格纳级月球轨道飞行器被用来研究月球表面的地质和环境。