“发酵过程”常见的英文表达是 fermentation process。
例如：
The fermentation process of wine-making is crucial to the flavor and quality of the final product.（葡萄酒酿造的发酵过程对最终产品的风味和质量至关重要。）
Scientists are studying the fermentation process to improve the efficiency of biofuel production.（科学家们正在研究发酵过程，以提高生物燃料生产的效率。）