When life arose, our ancestors made some choices. They went with the right-handed sugars, and the left-handed amino acids, a tradition still in effect.
在生命诞生之时，我们的祖先就作出了选择：糖右旋，氨基酸左旋，这个规律延续至今。
When life arose, our ancestors made some choices. They went with the right-handed sugars, and the left-handed amino acids, a tradition still in effect.
在生命诞生之时，我们的祖先就作出了选择：糖右旋，氨基酸左旋，这个规律延续至今。
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