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.
组成地球上蛋白质的那20个（氨基酸）都是左旋氨基酸。
The twenty that make up the proteins on Earth are all left-handed.
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.
构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。
Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.
它不仅携带了右旋和左旋氨基酸，而且还包含几十种生命至始至终从来不会利用的特殊氨基酸。
Not only does it carry both right - and left-handed versions of normal amino acids; it also contains dozens of exotic amino acids that life ended up not using at all.
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.
左旋肉碱是一种促使脂肪转化为能量的类氨基酸。
L-carnitine is a fat into energy to the class of amino acids.
请绘出20个左旋氨基酸与4个核苷酸的结构。
Please draw the structures of 20 L-amino acids and 4 nucleotides.
左旋肉碱是一种非必需氨基酸，它是由肝脏中的其它氨基酸产生的，它没有经由过程膳食直接获取的途径。
Carnitine is a nonessential amino acid, which means that it is manufactured from other amino acids in the liver; and it does not have to be obtained directly through the diet.
基质组合物还包括将生物活性左旋氨基酸溶液做为抗动脉粥样硬化剂。
The matrix combination also includes using bioactivity left lateral amino acid solution as anti-atherosclerosis agent.
同时，采用QF-1毛细管柱将松脂中长叶松酸和左旋海松酸加以分离。
Palutric acid and levopimaric acid were isolated with QF 1 capillary column.
同时，采用QF-1毛细管柱将松脂中长叶松酸和左旋海松酸加以分离。
Palutric acid and levopimaric acid were isolated with QF 1 capillary column.
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