英语语法分析

Saturated cyclic steroid and terpenoid compound is the better reductant.

含有饱和环的甾萜类是良好的还原剂。

The main ingredients of Tripterygium wilfordii are total alkaloids and terpenoid lactones.

雷公藤生物碱和总萜内酯是雷公藤主要有效成分。

Terpenoid: These naturally existing compounds is the most important component of vegetable oil.

萜烯类：这类天然存在的化合物是植物油中的最重要的成份。