英语语法分析

There were 20 species to be identified belonging to 16 genera, 3 phyla including Cyanophyta, Chlorophyta and Bacillatiophyta.

共发现藻类20种，分别归蓝藻门、绿藻门和硅藻门。

By comparison with different seaweeds, Phaeophyta is much higher in total amount of fatty acids and unsaturated fatty acids than Rhodophyta and Chlorophyta.

按分类比较，褐藻门海藻的脂肪酸总量及不饱和脂肪酸的含量都较高，而红藻门、绿藻门海藻的脂肪酸含量较低。