The security team installed a periscope so guards could monitor the loading dock safely.

保全團隊安裝了一具潛望鏡，讓警衛能安全地監看裝卸區。

Our catalog lists a compact periscope that customers often buy for parade viewing trips.

我們的型錄列有一款輕巧的潛望鏡，顧客常買來在旅行時觀賞遊行。

The shipment of fifty periscopes arrived damaged, so we requested a full refund.

那批五十具潛望鏡到貨時已損壞，所以我們要求全額退款。