fossil of megascopic algae

• 宏观藻类化石

fossil of megascopic algae的用法和样例：

例句

1. Macro algae fossils are liable biological markers of freshwater lakes and typical underwater biocoen.
   宏观藻类化石是可靠的淡水湖泊的生物标志和水下的代表性生物群落。