常见例句雙語例句Objective To investigate the distribution and morphology of the 5-hydroxytryptamine(5-HT)immunoreactive cells in the digestive tract of Manis pentadactyla.目的研究中國穿山甲消化道5-羥色胺（5-HT）免疫活性細胞的分佈和形態。 返回 Manis pentadactyla