principal office的用法和樣例：
例句
- You'll have to complain to Head Office if the washing machine stops working again.
如果洗衣機又停止運轉，你得向總店申訴。 - He was sent to our central office to take over the new sales department.
他被分配到我們的總店去接管一個(gè)新的銷(xiāo)售部門(mén)。 - We've got to report back to the head office.
我們還要回去向總部匯報情況呢。 - You must represent your complaints to Head Office.
你必須向總部表示出你的抱怨。
