Pelagic algae的用法和样例：
例句
- Hitherto it was assumed that the main way carbon gets from the top to the bottom of the ocean was as part of dead planktonic algae sinking to the seabed.
在此之前，人们一直认为碳从海面转移到海底的主要途径是伴随着浮游藻类死亡后而沉没海底。 - Planktonic algae of some small eutrophic and adlittoral artificial Lake in the city zone of Guangzhou and their water quality were studied in July 2005 to February 2006.
研究了广州城区某富营养化小型浅水人工湖泊浮游藻类和水质特征及其变化规律。
