它们就是胃小凹，每个胃小凹内衬有许多不同的细胞，产生不同的、重要的胃分泌物。

These are the gastric pits and each one is lined with a number of different types of cell, producing a separate, important gastric secretion.

youdao

它们就是胃小凹，每个胃小凹内衬有许多不同的细胞，产生不同的、重要的胃分泌物。

These are the gastric pits and each one is lined with a number of different types of cell, producing a separate, important gastric secretion.

youdao