mustard sauce

例句：

1. 1. This mustard sauce is a perfect complement to the roast beef.
   这芥末酱是烤牛肉的完美搭配。
2. 2. The chef used mustard sauce to add flavor to the salad.
   厨师用芥末酱给沙拉增添了风味。
3. 3. Mustard sauce is often served with sandwiches as an appetizer.
   芥末酱通常作为开胃菜与三明治一起食用。