He says, " We can pay in installments."

他说，“我们可以分期付款。

That would be paying in installments.

那就是分期付款。

" To pay in installments" is to pay a little bit over a long period of time.

” “分期付款” 就是长期一点点地支付。

When you buy something but you don't pay the whole thing right away, you pay a little bit each month;that would be to pay in " installments."

当你买了东西， 但你没有马上付清所有的东西，你每个月付一点钱； 这就是“分期付款” 。