英语语法分析

Isoflavone is a phytoestrogen derived from soybeans.

异黄酮是一种来源于大豆的植物雌激素。

Resveratrol is a phytoestrogen and has many physiological activities.

白藜芦醇是一种植物雌激素，具有多种生理功能。

The results from earlier studies were hampered, however, by limited data about phytoestrogen content in food.

然而，早期研究的结果因食物中植物激素的含量数据有限而受阻。