Pseudonitzschia at first accounted for a small fraction of algae and plankton in the water, but soon made up 80 percent of some tank populations.

刚开始这种藻浮游在水里，在水池中并不起眼，但是很快其数量激增到整个水池藻类的80%。

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Pseudonitzschia at first accounted for a small fraction of algae and plankton in the water, but soon made up 80 percent of some tank populations.

刚开始这种藻浮游在水里，在水池中并不起眼，但是很快其数量激增到整个水池藻类的80%。

youdao