The first part of the alimentary canal of an arthropod or annelid, which includes the buccal cavity, esophagus, crop, and gizzard.

 
  • 前肠节肢动物或环节动物的消化道的第一部分,包括口腔、食管、嗉囊和砂囊
今日热词
目录 附录 查词历史