The stick insects may indeed have evolved a new set of wings, but it is not clear whether this change appeared as reverse evolution at the molecular level.

竹节虫确实是重新长出了翅膀，但是还并不清楚在分子水平上这是不是逆演化。

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This is the first time in a vertebrate animal that you can show such a clear connection between an animal's behavior and the changes at the molecular level.

这是脊椎动物首次清楚地显示出动物行为和分子层级变化之间的关系。

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It's not clear why this extrapolation was used or what conclusions can be drawn from it; the molecular surface tension could just as easily be asymptotic with respect to the zero point.

外推的原因和结论都不清晰，分子表面张力也可能是渐进趋向于零。

youdao

The agency treats genetically engineered products as though they pose some inherent, systematic, unique risks, when theoretical considerations, risk-assessment experiments and practical experience make it clear that they do not: A quarter-century-old scientific consensus holds that the molecular techniques of genetic engineering are an extension, or refinement, of less precise and predictable techniques for genetically improved products with which consumers and government regulators have long familiarity and comfort.

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