Hydroid
01
水螅体, 属于Hydrozoa纲的小型植物状水生生物
a small, plant-like aquatic organism belonging to the class Hydrozoa, often forming branching colonies
例子
Hydroids can often be found attached to rocks and seaweed in shallow waters.
水螅体经常可以在浅水区的岩石和海藻上找到。
