最后，当研究者重新恢复变异果蝇的二氧化碳受体基因时，变异果蝇就不再比正常果蝇长寿了。

Finally, when the researchers restored the gene for the CO2 receptor back into mutant lines of flies, the flies lived no longer than their normal Cousins.

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同时，其他科学家已经在一组神经元中识别出了一个受体，这个受体能使果蝇闻到二氧化碳，二氧化碳是一顿美味的活酵母呈现的标志。

In the meantime, other scientists had identified a receptor in a group of neurons that enablefruit flies to smell carbon dioxide, which signals the presence of a good mealof tasty yeast.

youdao

同时，其他科学家已经在一组神经元中识别出了一个受体，这个受体能使果蝇闻到二氧化碳，二氧化碳是一顿美味的活酵母呈现的标志。

In the meantime, other scientists had identified a receptor in a group of neurons that enable fruit flies to smell carbon dioxide, which signals the presence of a good meal of tasty yeast.

youdao