英语语法分析

Chondrichthyes (sharks, rays and chimaeras) account for only 2% of gnathostome species, the Osteichthyes accounting for the other 98%.

软骨鱼类(鲨鱼、鳐、银鲛)仅占有颌类物种数的2%，其余98%的有颌类都属于硬骨鱼类。