The client remained stubborn about the price, so we couldn't finalize the contract today.

客戶對價格始終很固執，所以我們今天無法敲定合約。

Our manager is stubborn, but she listens when you bring solid sales data.

我們經理很固執，但如果你拿出可靠的銷售數據，她還是會聽。

A stubborn customer insisted on a full refund even after the return deadline passed.

一位固執的顧客即使已過退貨期限，仍堅持要求全額退款。