Under the circumstances, we have decided to postpone the product launch until March.

在這種情況下，我們決定將產品發表會延到三月。

Due to unforeseen circumstances, your flight to Tokyo has been rescheduled for tomorrow morning.

由於不可預見的情況，您飛往東京的班機已改至明早。

Please explain the circumstances of the late shipment in your reply to the client.

請在回覆客戶時說明這批貨延遲出貨的情況。