摘要
世界上有超过三万种鱼类。鱼群的移动速度非常快。它们靠鳍控制身体,鳍能够帮助鱼朝着不同的方向游。鱼虽然不能像人一样说话,但可以互相沟通。它们可以通过声音彼此传递信息!
There are over 30,000 types of fish in the world.When fish swim together in a large group,they move very fast.They use their fins to control their bodies.Fins help fish swim in several directions.Fish can't talk like people,but they do communicate.They can send messages to each other through sounds!
