英语翻译

题目

英语翻译
the free amino acid pool itself appears to be structured in the sense that the extent to which amino acids are concentrated inside muscle cells varies with the type of amino acids and the distribution ratio of different amino acids across muscle membranes alters during different circumstances

答案

understand it in this way:
the free amino acid pool itself appears to be structured
= The localization of free amino acid in the body appears to be regulated in certain way.
in the sense that = because ( considering the following example):
1.the extent to which amino acids are concentrated inside muscle cells varies with the type of amino acids
= different amino acids have different concentration in muscle cells
2.the distribution ratio of different amino acids across muscle membranes alters during different circumstances
= the distribution ratio of different amino acids across muscle membranes also changes under different circumstances.