Its animal nature isn't in doubt, and we can't accept even the views of the ancients, who regarded it as halfway between plant and animal.

的动物性是无可怀疑的，我们不能接受古代人的，是动植物间的中介物。

He wanted her to know that here too his conduct should be above suspicion.

他想让她知道， 他的行在这里也应该是无可怀疑的。

The evidence was clear, and there was little room for doubt.

【room】证据确凿，无可怀疑。