n.

1. 離開；出發，起程[C][U][（+for）]
   The plane's departure was on schedule.

   飛機準時起飛。

2. 背離，違背，變更[C][（+from）]
   The new policy represents a complete departure from their previous position.

   新政策意味著他們完全背離了以前的立場。

3. 偏移，偏差

n.

1. the action of departing.
   ▸a deviation from an accepted, prescribed, or usual course of action.
2. Nautical  the amount of a ship's change of longitude.