Noun:

1. an amino acid that is found in many proteins (especially collagen)

Proos普罗斯pron.能手；行家；正面adj.专业的；赞成的adv.正面地prep.赞成Protopam chloride氯解磷定制剂protozoan disease原生虫病Prostaglandin PGD前列腺素PGDproscons analysis利弊分析protoetiprophyrin原本卟啉proinsulin family胰岛素原家族prostatitis/DT前列腺炎／药物疗法protruding baffle突出挡板Prolapsed varices脱垂性血管曲张proving reasoning论证推理

1. It also contains high concentrations of proline and hydroxyproline.
   它还含有高浓度的脯氨酸和羟脯氨酸。
2. The free proline content displays with the starch content change is consistent.
   游离脯氨酸含量上表现与淀粉含量变化一致。