例句與造句

1. who passed gas ？ i knew we shouldn't have served beans
   是誰放的屁？我就知道不該讓大家吃豆子的。
2. seventeen of 34 patients who chewed gum beginning a few hours after surgery passed gas several hours sooner than the half who did not chew, and they had their first bowel movements an average of 63 hours after surgery compared with 89 hours for non-chewers
   研究發(fā)現(xiàn)，咀嚼口香糖的患者比另一半不嚼口香糖的患者早數(shù)小時(shí)排氣，并且，前者平均在手術(shù)后的63個(gè)小時(shí)里就出現(xiàn)了首次腸道運(yùn)動(dòng)，而后者在術(shù)后89個(gè)小時(shí)才出現(xiàn)首次腸道運(yùn)動(dòng)。
3. It's difficult to find passed gas in a sentence. 用passed gas造句挺難的