(of a bird, bat, or insect) move through the air using wings. "close the door or the moths will fly in" fly的过去式
verb [vi. 不及物动词] 飞，飞翔（fly 的过去式）
Planes flew overhead constantly. 飞机不断从头顶上飞过。
- flew 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 093&94 Our new neighbour
- Lesson 29 Taxi!
- Lesson 43 Over the South Pole
- Lesson 75 SOS
- Lesson 79 By air
