dipteran

例句：

1. 1. The dragonfly dances gracefully in the sunlight.
   蜻蜓在阳光下翩翩起舞。
2. 2. Dragonflies are a common sight in summer gardens.
   蜻蜓是夏天花园中常见的景象。
3. 3. Many people enjoy watching dragonflies dart across the water.
   许多人喜欢观看蜻蜓在水面上快速穿梭。