英语语法分析

It showed that tannins in E. citriodora leaf are of ellagitannins and the C-glycosidic ellagitannins are first isolated from Eucalyptus species.

结果表明，柠檬桉叶中的单宁是鞣花单宁，而 C-糖苷鞣花单宁首先是从桉树中分离出来的。

Structures of hexose and pentose sugars and glycosidic bonds.

六碳糖与五碳糖的结构，以及糖链。

An oligosaccharide contains2to20sugar units joined by glycosidic bonds.

一个寡糖由2 ~ 20个糖单元由糖苷键连接起来。