例句與造句

1. According to medical research , when vitamin b12 enters the body , it forms a compound with an intrinsic factor secreted by the parietal cells large cells of the peptic glands on the gastric mucosa mucous membrane of the stomach , before being absorbed by receptors in the ileum lower part of the small intestine in the presence of calcium ions
   在維他命b12的吸收方面，根據(jù)醫(yī)學(xué)報(bào)導(dǎo)，維他命b12在吃進(jìn)人體后，首先會(huì)在胃部，和胃壁細(xì)胞parietal cells分泌的一種蛋白質(zhì)內(nèi)因子intrinsic factor結(jié)合，形成復(fù)合物后，再由小腸段中的回腸ileum吸收。在回腸之接受體receptors吸收時(shí)，需要有鈣離子之存在。
2. It's difficult to find peptic gland in a sentence. 用peptic gland造句挺難的