pelecypoda

例句：

1. 1. The pelecypoda are found in the oceans andseas around the world.
   无脊椎动物在世界各地的海洋和海域中被发现。
2. 2. Pelecypoda are known for theirunique shells and colorful patterns.
   无脊椎动物以其独特的贝壳和多彩的图案而闻名。
3. 3. Many pelecypodaspecies are threatened by pollution and climate change.
   许多无脊椎动物物种因污染和气候变化而受到威胁。