“leaven”造句，怎麼用leaven造句

But I make this matzo without leaven in my wood-burning oven under the prescribed 18 minutes from start to finish.

"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."