What does 打着饱嗝 and 嫌缸沿脏 and 踩上去蹲在上面 mean in the novel 活着 p.7?
打饱嗝 = let out a (after full meal) belch

打着饱嗝 = letting out a (after full meal) belch

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嫌 = dislike

缸沿 = edge of the (opening of) crock 

脏 = dirty

嫌缸沿脏 = disgusted by the edge of the opening of the crock being dirty

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踩上去 = step upon

蹲在上面 = crouch on top of

踩上去蹲在上面 = step upon and crouch on top of


  He was disgusted by the edge of the crock opening being dirty, didn't want to sit on it, so he stepped upon the edge of the crock and crouched on top of it (to take a dump)