vital
至关重要的(生命级别,不可或缺,强调「缺少则后果严重」)
essential
必不可少的,基本的(构成基础或正常运转所必需的要素)
Trust between citizens and their government is vital for maintaining social stability and democratic accountability.
公民与政府之间的信任对维护社会稳定和民主问责制至关重要。
Access to clean water and adequate sanitation are essential components of any effective public health strategy.
获得清洁水源和充足卫生设施是任何有效公共卫生战略的基本组成部分。