(US usu 美式英语通常作 installment) / In5stR:lmEnt; In`stRlmEnt/ n
1 any one of the separate but connected parts in which a story is presented over a period of time （一故事分段连载或连播等的）一集
*a story that will appear in instalments 分段连载的故事
* Don't miss the next instalment! 下期续载, 切勿错过!
2 ~ (on sth) any one of the parts of a payment spread over a period of time （分期付款的）一期付款
*pay for a house by monthly instalments 按月分期付款买房
* keep up the instalments (ie maintain regular payments) on the house 为买该房按时分期付款.

n[C]
one of a series of regular payments that you make until you have paid all the money you owe
　the second instalment of a loan
　They're letting me pay for the washing machine by monthly instalments .
one of the parts of a story that appears as a series of parts, especially in a magazine, newspaper etc
　the first instalment of a science fiction trilogy