[经] partially amortized mortgage
bù fèn fēn qī tān hái dǐ yā jiè kuǎn ㄅㄨˋ ㄈㄣˋ ㄈㄣ ㄑㄧ ㄊㄢ ㄏㄞˊ ㄉㄧˇ ㄧㄚ ㄐㄧㄝˋ ㄎㄨㄢˇ