unpowered glide

例句：

1. 1.The drone was unpowered and glided silently over the city skyline.
   无人机是无动力的，静静地在城市天际线上滑翔。
2. 2. The aircraft's wings were unpowered, allowing it to glide effortlessly through the air.
   飞机的翅膀是无动力的，让它能够轻松地在空中滑行。
3. 3. The spacecraft's propulsion system was unpowered, enabling it to glide through the vacuum of space.
   太空船的推进系统是无动力的，使它能够穿越真空空间。