I am a dragon,but I can't fly.
I am a snake,but I can't bite.
I am a worm,but I can cross the river day and night.
I am a（earthworm）.
我是龙,却不能飞.
我是蛇,却不咬人.
我只是条小虫,但是通过不舍昼夜的努力,我能穿过河流.
我是（蚯蚓）.
注：蚯蚓,也叫地龙.