Tetraxonida

例句：

1. 1.The tetraxonid was found in the deep ocean.
   这种四边形菌在深海中被发现。
2. 2. The tetraxonid is a fascinating organism that has been studied for decades.
   这种四边形虫是一种令人着迷的生物，几十年来一直受到研究。
3. 3. The tetraxonid has been found to have unique properties that make it an important model for studying life on other planets.
   这种四边形虫被发现具有独特的性质，使其成为研究其他行星上生命的重要模型。