英语语法分析

It's not only aristolochia that is worrying experts.

专家们担心的不仅仅只是马兜铃。

Objective:To study the chemical constituents of the fruit of Aristolochia debilis.

目的：研究南马兜铃果实的化学成分。

ObjectiveThis paper reviews recent research progress on pharmacological action of Aristolochia l.

对马兜铃属植物的生物活性和药理作用研究进行了较全面的综述。