n.[化]色氨酸
Once in the brain, the tryptophan is converted to serotonin. 一旦進(jìn)入大腦，色氨酸會(huì)被轉(zhuǎn)化成血清素。
She rates dozens of foods for their levels of tryptophan. 她對(duì)數(shù)十種食物的色氨酸水平進(jìn)行了估計(jì)。
