Ceratophyllum demersum的用法和樣例：
例句
用作名詞 (n.)
- Any of several submerged plants of the genus Ceratophyllum,forming branched masses in quiet water and having finely dissected,whorled leaves and minute unisexual flowers.
角苔，一種金魚(yú)藻屬的水下植物，在風(fēng)平浪靜時(shí)會(huì )形成縱橫交錯的樹(shù)枝網(wǎng)，生有輪生的多裂葉，開(kāi)極小的單性花。
