最出名的种群是红肚水虎鱼，但其实大约有四十种不同类型的水虎鱼。
The most well-known species is the red-bellied piranha , but there are nearly forty other different species of piranha .
最出名的种群是红肚水虎鱼，但其实大约有四十种不同类型的水虎鱼。
The most well-known species is the red-bellied piranha , but there are nearly forty other different species of piranha .
应用推荐