The old filing system fell into desuetude after the office switched to cloud storage.

辦公室改用雲端儲存後，舊的歸檔系統就廢棄不用了。

Several shipping routes have fallen into desuetude since the port expanded its container terminal.

自從港口擴建貨櫃碼頭後，好幾條航運路線已不再使用。

The company's dress code policy lapsed into desuetude, so management decided to formally revise it.

公司的服裝規定早已形同虛設，因此管理階層決定正式修訂。