如果左旋氨基酸占大多数的话，就说明这些氨基酸从根源上来说是具有生物性的。

A prevalence of left-handed amino acids would indicate they were biological in origin.

youdao

M.O.A 这种有机分析器令人印象深刻的原因之一是：它不仅检验了氨基酸是否存在，而且还测试出了氨基酸的旋向性。

One reason the M.O.A., the organic analyzer is so impressive is that it tests not just for the presence of amino acids but also for the handedness of amino acids.

youdao

如果发现了氨基酸，并且它们普遍表现出同一种偏向性——要么像地球上的氨基酸一样是左旋的，要么是右旋的，那将会格外有趣。

If amino acids are found, it would be especially interesting if they show a prevalence of one type of handedness, either left, like amino acids on Earth, or right.

youdao

There are 64 combinations of three bases and I only need to describe 20, so there's combinations to spare.

三个一组的碱基产生六十四种组合,而我只需对应二十种氨基酸,所以一种氨基酸会对应不同密码子

耶鲁公开课 - 生物医学工程探索课程节选

The plants can be deficient in certain things, especially fat soluble vitamins that come from meat and from essential amino acids.

植物中缺乏某些物质,特别是脂溶性维生素,那些只能从肉类和必需氨基酸中获得

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The reason it is so exciting that it's a protein, and it's a protein, this is the structure here, it's a ribbon structure so you can kind of see what it looks like, it's made up of all natural amino acids.

它这么让人激动的原因是因为它是一个蛋白质，这里的这个结构，这是个带状机构，你可以看到它的样子，它全部是由氨基酸组成的。

麻省理工公开课 - 化学原理课程节选