英和和英

形容詞

free-swimming (not comparable)

1. (biology) Able to swim about freely.
   • 1885, Sir Norman Lockyer, Nature - Volume 32, page 418:

     It is a most remarkable fact that almost all these shore animals in their early development from the egg pass through free-swimming larval stages which are closely alike in form for very widely different zoological groups.

   • 2008, Frank R. Spellman, Handbook of Water and Wastewater Treatment Plant Operations, page 715:

     The presence of free-swimming and stalked ciliates, some flagellates, and rotifers in mixed liquor indicates a balanced, propertly settling environment.