Because the unit turns itself on and off automatically, the battery life and the unit life are preserved.

因为该设备就能自动关闭打开，所以电池的寿命和望远镜的寿命都得到了延长。

youdao

Because the unit turns itself on and off automatically, the battery life and the unit life are preserved.

因为该设备就能自动关闭打开，所以电池的寿命和望远镜的寿命都得到了延长。

youdao