常见例句双语例句Objective To investigate the distribution and morphology of the 5-hydroxytryptamine(5-HT)immunoreactive cells in the digestive tract of Manis pentadactyla.目的研究中国穿山甲消化道5-羟色胺（5-HT）免疫活性细胞的分布和形态。 返回 Manis pentadactyla