具小鳍的具小鳍状物的具二回羽叶的具小羽片的小羽片二回羽叶小鳍棘皮动物的羽枝小鳍状物
With small fins, with small fin-like structures, with twice-feathered leaves, with small leaflets, with small leaflets, twice-feathered leaves, small fins, the branches of echinoderms, with small fin-like structures
以上为机器翻译结果，长、整句建议使用 人工翻译 。