英语语法分析

It is nourished mainly by dead matter that falls from the littoral and limnetic zones and by sediment washing into the lake.

它主要由落从海滨和淡水的区域和由洗涤入湖的沉积的无机物养育。

The conclusion is that the sedimentary environment of coal measures in Changyang area, Shuangyang basin is mainly fan delta and limnetic deposits.

得出的结论是：双阳盆地长岭区煤系地层沉积环境主要为扇三角洲沉积和湖泊沼泽沉积。

A large number of limnetic macro algae fossils were found in the Chang6 reservoir in Ansai Oilfield, which proved the existence of macro algae in the Mesozoic.

安塞油田长6油层发现了大量的淡水宏观藻类化石，证实了中生界宏观藻类的存在。