churn|churns

银行推出忠诚度计划来降低客户流失率。

The bank launched a loyalty program to reduce customer ___churn.

农民们用木棒不停地搅动牛奶，直到它变成黄油。

The farmers used wooden sticks to ___churn the milk until it turned into butter.

看到那个画面后，我的胃开始翻腾。

After seeing that scene, my stomach ___churns.