Please note that oxygen masks will drop from the ceiling if cabin pressure changes.

請注意，如果機艙壓力改變，氧氣面罩會從天花板落下。

Our medical supply division shipped two hundred oxygen tanks to the hospital on Monday.

我們的醫療用品部門週一運送了兩百個氧氣瓶到醫院。

The safety manual requires staff to check oxygen levels before entering the storage tank.

安全手冊規定員工在進入儲存槽前必須檢查氧氣濃度。