动物世界

The Pretty Dragonfly

美丽的蜻蜓蜻蜓是我们熟知的昆虫。夏天我们经常能看到它们轻盈地掠过水面．优雅地落在花或叶片上。但是．你知道吗？蜻蜓早在200万年前就已经出现，甚至比恐龙出现得还早。蜻蜓身体细长，色彩艳丽．有棕色的、红色的、绿色的、蓝色的。有的蜻蜓身上还有棕色的斑点和条纹。

We are very familiar with the dragonflies. In summer we can often＇see them flying lightlyacross the water and land gracefully on a flower or a leaf. Bot do you,know that they have beenon the earth for more than 200 million years, and even older than the dinosaurs？