irreplaceableWiktionary 原文中文来自 ECDICTadj.不能调换的，不能代替的构词拆分in-前缀in, into, towards, within.+replaceable词根/词干词源说明From ir- + replaceable.释义（英文）形容词 AdjectiveIncapable of being replaced, especially because of uniqueness or finiteness.词族派生词（3）irreplaceabilityirreplaceablyirreplaceableness