这棵树的果实往往相当酸。

This tree runs to quite tart fruit.

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总之，氨基酸是很容易制造的，核苷酸也是可以制造的，但是有相当的难度，其他重要的生物小分子也可以被"无生命地"合成出来。

In summary, amino acids are easy to make, nucleotides can be made with considerable difficulty, and other biologically important small molecules can be synthesized “abiotically”.

youdao

其实，我们平常的饮食中ω-6系列多不饱和脂肪酸相当丰富。

Well, our normal diets are rich in omega-6 fatty acids.

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