Admittedly the species in question is a virus, but the proof of principle is important.

诚然，这个正被讨论的物种是一个病毒，但其原理的证明却很重要。

youdao

This is the first proof of principle. It shows that the technique works.

这次的成果是科学原理的首次例证，它表明了这一技术是可行的。

youdao

This is the first proof of principle. It shows that the technique works.

这次的成果是科学原理的首次例证，它表明了这一技术是可行的。

youdao