He looked through the peris to see the enemy ship.

他通过潜望镜看到了敌舰。

The submarine used a peris to observe the surface.

潜艇使用潜望镜观察水面。

She used the peris to check for any obstacles ahead.

她使用潜望镜检查前方是否有障碍物。

The soldier adjusted the peris to get a better view.

士兵调整潜望镜以获得更好的视野。

The peris allowed them to see above the water without being detected.

潜望镜使他们能够在不被发现的情况下看到水面上的情况。