The item you ordered is currently unavailable, so we will ship it next week.

您訂購的商品目前缺貨，我們將於下週出貨。

Ms. Chen is unavailable for the meeting this afternoon because of a client visit.

陳小姐今天下午因為要拜訪客戶，無法出席會議。

Our online banking service will be unavailable on Sunday morning due to scheduled maintenance.

由於系統例行維護，本行網路銀行服務將於週日上午暫停使用。