digallic acid的用法和樣例：
例句
- They were identified as mallotinic acid, mallotusinic acid, corilagin, geraniin, rutin, and ellagic acid.
它們分別是野桐酸，野桐鞣酸，鞣雲實精，老鸛草鞣質，芸香苷和鞣花酸。 - It is the tannic acid contained in oak that ages the brandy.
正是櫟木里含的丹寧酸使白蘭地變芳醇了。 - Tannins of the first type which are found in tea generally yield glucose and gallic acid when they are hydrolyzed.
第一種丹寧酸發現於茶葉中，通常將它們水解時會產生葡萄糖和沒食子酸。
