Unionidae

常見例句

• The parasitic larva of certain freshwater mussels of the family Unionidae,having hooks for attaching to the gills or other external parts of a host fish.
  瓣鉤幼蟲珠蚌科淡水貝類的寄生幼體，長(zhǎng)有鉤并用來附著在寄宿主魚的鰓或其他體外部分。
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