句子示例
| The order Pennatulacea comprises about 200 species of sea pens. | 海鳃目包含约200种海鳃。 |
| Members of Pennatulacea are characterized by a feather-like colonial structure. | 海鳃目动物的特征是羽毛状的群体结构。 |
| In the classification of Cnidaria, Pennatulacea is placed under Octocorallia. | 在刺胞动物门的分类中,海鳃目被归入八放珊瑚亚纲。 |
| Fossil records of Pennatulacea are relatively scarce due to their soft bodies. | 由于身体柔软,海鳃目的化石记录相对稀少。 |
| The researchers documented a new species belonging to Pennatulacea from the deep sea. | 研究人员记录了深海中海鳃目的一新种。 |