Lǎoshī / ràng / wǒmen / bǐjiào / dān / zǐ / yè / zhíwù / hé / shuāng / zǐ / yè / zhíwù / de / gēnbù / jiégòu / 。

老师让我们比较单子叶植物和双子叶植物的根部结构。

The teacher asked us to compare the root structures of monocots and dicots.