英语语法分析

But chitin deposits never build up on the sea or forest floor.

但是，甲壳素沉积从来没有积累成海洋或森林有机质层。

Like most worms, helminths synthesize chitin for their pharynx.

如同大多数蠕虫，蛔虫为自身咽部合成甲壳素。

Chitin synthase is the important enzyme that converts UDP - GlcNAc to chitin.

摘要几丁质合成酶是生物合成几丁质的关键物质。