pinicortannic acid

例句：

1. 1. The acid was used to dissolve the stone.
   这种酸被用来溶解石头。
2. 2. The acid is highly corrosive and can cause severe damage.
   这种酸具有很强的腐蚀性，可能会导致严重的损害。
3. 3. The acid was used in the chemical process.
   这种酸在化学过程中被使用。