We signed an agreement whereby the supplier will deliver all parts within ten days.

我們簽訂了一份協議，據此供應商將在十天內交付所有零件。

The bank introduced a new system whereby customers can approve transfers by phone.

銀行推出一套新系統，客戶藉此可以透過電話核准轉帳。

Staff follow a policy whereby overtime must be approved by a manager in advance.

員工遵循一項政策，依此規定加班必須事先經主管核准。