Xanthophyceae

例句：

1. 1.Xanthophyceae are a group of marine algae that can be found in the ocean's deep waters.
   黄藻纲是一类海洋藻类，可以在海洋深处找到。
2. 2. The study of Xanthophyceae is important for understanding the biodiversity of the ocean.
   研究黄藻纲对于了解海洋生物多样性非常重要。
3. 3.Xanthophyceae play a crucial role in the carbon cycle and help to regulate the pH levels in the ocean.
   黄藻纲在碳循环中起着至关重要的作用，有助于调节海洋的酸碱度。