“the old leaven”造句，怎麼用the old leaven造句

Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened.

Take away, then, the old leaven, so that you may be a new mass, even as you are without leaven.

"Do you know, Villefort, that you are talking in a most dreadfully revolutionary strain? But I excuse it, it is impossible to expect the son of a Girondin to be free from a small spice of the old leaven."