例句與造句

1. Hydrolyzable tannins include the commonly occurring gallic and ellagic acid contained in the nut galls.
2. Hydrolyzable tannins are present in many different plant species but are found in particularly high concentrations in nut galls growing on " Rhus semialata " ( Chinese and Korean gallotannins ) and " Quercus infectoria " ( Turkish and Chinese gallotannins ), the seedpods of " Caesalpinia spinosa " ( Tara tannins ), and the fruits of " Terminalia chebula ".
3. It's difficult to find nut gall in a sentence. 用nut gall造句挺難的