Qián / wàng / jìng / kě / yǐ / ràng / rén / zài / jiào / dī / de / wèi / zhì / kàn / dào / yuǎn / chù / de / mù / biāo潜望镜可以让人在较低的位置看到远处的目标。A periscope allows someone in a lower position to see distant targets.