Mortgage interest rates have fallen, but large down payments remain a stumbling block for house buyers.按揭利率下调，但一大笔首期付款对购房者来说依然是块绊脚石。We saved enough money to make a down payment on a house.我们存的钱足以支付买房时的首期付款了。The first instalment is payable on application.首期付款应在申请时交付。