spontaneous fermentation

例句：

1. 1.The spontaneous fermentation of the wine was very interesting.
   葡萄酒的自发发酵非常有趣。
2. 2.The spontaneous fermentation of the wine is a natural process that occurs without any intervention.
   葡萄酒的自发发酵是一种自然过程，不需要任何干预。
3. 3. The spontaneous fermentation of the wine is responsible for the flavor and aroma of the wine.
   葡萄酒的自发发酵负责赋予酒的风味和香气。