passing gas中文什么意思

例句与用法

1. who passed gas ？ i knew we shouldn't have served beans
   是谁放的屁？我就知道不该让大家吃豆子的。
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
   研究发现，咀嚼口香糖的患者比另一半不嚼口香糖的患者早数小时排气，并且，前者平均在手术后的63个小时里就出现了首次肠道运动，而后者在术后89个小时才出现首次肠道运动。