定的英語翻譯：

book; order; decide; fix; stable; surely; calm

期的英語翻譯：

a period of time; expect; sheduled time
【化】 term
【醫(yī)】 period; phase; stadia; stadium; stage; time
【經(jīng)】 term

償還的英語翻譯：

compensate; redeem; refund; imburse; pay; recoup; reimburse; repay
【經(jīng)】 deduct from; recoup; recoupment; redemption; refund; refundment
reimburse; repay; repayment; restitute; satisfaction