immutableWiktionary 原文英美adj.不可变的，不变的，不能变的中文释义来自 ECDICT构词拆解imin-前缀mutablemutable词干in-in, into, towards, within.词源链拉丁语Latin约前 75–公元 3 世纪immūtābilis‘unchangeable’↓ 派生中古英语Middle English约 1150–1500 年immutable↓ 继承英语Englishimmutable词源说明From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable.释义形容词adjective1Unable to be changed without exception.2(programming, of a variable) Not able to be altered in the memory after its value is set initially.名词noun1Something that cannot be changed