The manager asked about my motive for applying to the overseas sales position.

經理問我申請海外業務職位的動機是什麼。

Profit was clearly the main motive behind the supplier's sudden price increase.

供應商突然漲價，主要動機顯然是為了獲利。

Customer service staff should not question a client's motive for requesting a refund.

客服人員不應質疑客戶要求退款的動機。