并且美国宇航局的两个维京人登陆车在1976年，装备有精密的生命化学实验仪器，分析了它的土壤发现完全不存在可以构成生命的有机组织结构。

And NASA's two Viking landers in 1976, equipped with sophisticated life chemistry experiments, analyzed the soil and found it devoid of the organic building blocks of life.

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隐存保证背书在形式上构成回头背书时，被背书人得以存在保证关系为由，要求其作为背书人时的后手承担票据责任。

When hidden guaranty endorsement composes turning round endorsement in form, the endorsee can ask the successor as endorser to undertake the bill duty for the cause of existing guaranty relation.

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本文在探讨“精神”的定义和人的“精神性”存在及其构成的基础上，针对当代教育的深层弊端论述加强精神教育的重要性。

On the grounds of exploring the definition of "spirit" and the structure of human spirituality, this paper systematically discusses the importance of spiritual education.

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