对于人们来说，发明是至关重要、必不可少的，正如灵魂对人们来说是不可或缺且意义重大的一样。
Invention is momentous and fundamental to people what the soul is vital and significant to us.
冷链存储和易腐货物和温度敏感的药品和生物制剂和他们的供应链中不可或缺的组成部分的分布是必不可少的。
Cold chains are essential for storage and distribution of perishable goods and temperature sensitive pharmaceuticals and biological preparations and forms an integral part of their supply chain.
水对地球上的生命体是必不可少的物质，其特殊的性质让寻找外星人的学者认为水在其他地方也是不可或缺的。
The stuff is essential to life on Earth, and its peculiar properties mean those hunting aliens think the same will be true elsewhere.
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