sanitation
the systems for taking dirty water and other waste products away from buildings in order to protect people's health
下水道設施，衛生設備

sanity
the state of having a healthy mind and not being mentally ill
心智健全的狀態，神智正常的狀態；頭腦清醒的狀態

為什麼我能把這個搞混 我是白痴吧

上個月覺得自己講得還不錯
結果這個月變得好卡
考官直接說這是awkward english

classical 古典的
classic 經典的