【动】浮游动物; 浮游生物中的微生动物
浮游动物
the animal constituent of plankton, which consists mainly of small crustaceans and fish larvaeSee phytoplankton
1. animal constituent of plankton; mainly small crustaceans and fish larvae
(hypernym) , , , , ,
(member-holonym)
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1. animal constituent of plankton; mainly small crustaceans and fish larvae(hypernym) , , , , , (member-holonym) 
柯林斯
百科