蜂鸟是唯一可以倒飞的鸟类。

Hummingbirds are the only types of birds that can fly backwards.

youdao

我看到地面的升起，然后飞机进入到倒飞的状态。

I see the ground come up, and the aircraft is inverted with wings level.

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当直升机到达操控者的正前方时，机体刚好成为倒飞的姿态。

The helicopter should be inverted as it passes in front of the pilot.

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