vanillin-sulphuric acid solution

例句：

1. 1. The chemical was used to make perfumes and flavorings.
   这种化学物质被用来制造香水和调味料。
2. 2. Thevanillin-sulphuric acid solutionis a key ingredient in the productionof vanilla extract.
   香草醛硫酸溶液是生产香草提取物的关键成分。
3. 3. Thesolution was used as a preservativein food processing.
   这种溶液在食品加工中用作防腐剂。