The warehouse supervisor reported that one rung of the storage ladder was cracked.

倉庫主管回報，儲物梯有一根橫檔裂開了。

Before changing the lobby light, the technician checked every rung for loose bolts.

技術人員在更換大廳燈泡前，逐一檢查每個梯級的螺絲是否鬆動。

Our safety manual says employees must never stand on the top rung of a ladder.

我們的安全手冊規定，員工絕不可站在梯子最上面那一級。