一个命题的证明是一种性质使得我们相信该命题的过程。
A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.
Nothing in biology makes sense except in light of evolution
【释义】人穷的时候不能丧失道德的标准，而发达的时候也不能背弃自己做人的原则。
The energy sector is not just about extracting resources; it's about powering progress and shaping the future.