in·var·i·a·ble
adjective/ɪnˈveəriəbl/
/ɪnˈveriəbl/
- always the same; never changing
始终如一的；永无变化的 - Her routine was invariable.
她的日常生活总是千篇一律。 - his invariable courtesy and charm
他那一贯的彬彬有礼和魅力 - an invariable principle
一贯原则 - This is an invariable law: true at all times and places.
这是一条不变的法则：无论何时何地都是如此。
Word Originlate Middle English: from French, or from late Latin invariabilis, from in- ‘not’ + variabilis (from variare, from varius ‘diverse’). - Her routine was invariable.