This meant the much needed hay was accidentally cut out of the Swiss cheese making process.

这意味着之前需要的干草被意外地从瑞士奶酪制作过程中去掉了。

Well, we've come a long way, considering this 7,000-year journey from enzymes in cheese making to the present day and enzyme design.

这一切来之不易，想想从 7000 年传统的芝士制作到今天的酶设计。

This causes the milk to curdle. It's  part of the cheese making process.

这会导致牛奶凝结。这是奶酪制作过程的一部分。

Because during the cheese making process, the curds used to make Westcombe cheddar are formed when milk coagulates and is cut into curds.

因为在奶酪制作过程中，牛奶凝固并被切成凝乳后，就形成了用于制作 Westcombe 切达干酪的凝乳。

The problem was cheese makers in Europe began to notice that their Swiss cheeses were starting to have fewer and fewer holes, yet they hadn't changed anything about the bacteria in the cheese making process.

问题是欧洲的奶酪制造商开始注意到瑞士奶酪的孔越来越少，但他们并没有改变奶酪制作过程中使用的细菌。