This is unnatural. It has never happened before. We have no explanation.

这是反常的。以前从未发生，我们无法解释。

youdao

Reading is an unnatural act; we are no more evolved to read books than we are to use computers.

阅读不是一种自然而然的行为；我们读书和使用电脑比起来，并没有更多的进化方面的优势。

youdao

The eye prefers similarly sized and spaced elements, but if they are all the same, there is no variation on the page making it look unnatural.

视觉会倾向于那些具备熟悉的尺寸和空间的元素，但是如果它们都一样，那么页面就会缺乏变化而让这些元素显得不自然。

youdao

Or that the mixing of genes between unrelated species is no more unnatural than the gene flows that have driven evolution since life began.

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Mr. FLOYD LANDIS (Winner of 2006 Tour de France): They say that the ratio is out of line, but there's no indication that there's anything unnatural in my body at this time.

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No other additives of any kind, natural or unnatural, are allowed.

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