mother vinegar

例句：

1. 1. The vinegar in the bottle has turned to a thick, viscous liquid.
   瓶子里的醋已经变成了浓稠的液体。
2. 2. She added some vinegar to the salad dressing for extra tanginess.
   她给沙拉酱里加了点醋，以增加酸味。
3. 3. Vinegar is often used as a preservative in food storage.
   醋常被用作食品储存中的防腐剂。