1. The recipe calls for a dash of acetum to add a tangy flavor to the dressing.
这个食谱要求加一点醋酸来给调料增添一种酸味。

2. Acetum can be used as a natural preservative and flavor enhancer in various food preparations.
醋酸可以作为一种天然防腐剂和增香剂，在各种食品制备中使用。