iteration

劍橋詞典

formal
the process of doing something again and again, usually to improve it, or one of the times you do it
反複（通常爲了作出改善而重複做某事）
the repetition and iteration that goes on in designing something 在設計某物時的重複與反複脩改
The software is on its fifth iteration. 這個軟件已經是第五版。
mathematics, computing   specialized
an amount that you get when you use a mathematical rule several times
疊代，曡代（數學裡若乾次使用一個數學法則得出的量） 返回 iteration