1. A small tumor, usually found in the gastrointestinal tract, that secretes serotonin. 
   类癌瘤通常在胃肠道里发现的一种小肿瘤，分泌血清素
2. a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract. 
   一种b类维生素，对于维持神经系统和胃肠道的正常功能起关键作用。
3. a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin. 
   生长在肠胃道中的小肿瘤。
4. any of a group of picornaviruses that infect the gastrointestinal tract and can spread to other areas (especially the nervous system). 
   感染胃肠道的一组小核糖核酸病毒，可以扩散到其他区域（尤其是神经系统）。
5. The innermost of the three primary germ layers of an animal embryo, developing into the gastrointestinal tract, the lungs, and associated structures. 
   内胚层动物胚胎三个原始胚层的最内层发育成胃肠道、肺及其附属衍生结构

查看更多例句 相关情景会话

• 1. 胃肠道
  n.消化道,营养管gastrointestinal tract...胃肠道corticospinal tract...皮质脊髓束urinary tract infection
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• 2. 胃肠管
  Gastrin 促胃液素...gastrointestinal tract 胃肠管...Gel 凝胶
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• 3. 胃腸道
  Gastroenterologist 胃腸專科醫師...gastrointestinal tract 胃腸道...General anesthesia 全身麻醉
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• 4. 肠胃道感染
  结膜炎以外的眼睛部位感染(Eye, other than conjunctivitis)...肠胃道感染(gastrointestinal tract)...腹腔内感染(Intraabdominal, not specified elsewhere)
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