不飞鸟目 [古生] Diatrymiformes
不明飞行物 UFO
巨型不飞鸟 Diatryma gigantea
不明飞行物体 Unidentified Flying Object
飞矢不动(又作芝诺悖论) the flying/moving arrow is at rest (a philosophical paradox advocated by ancient Greek philosopher Zeno of Elea; also known as Zeno's Paradoxes or Arrow Paradox)
不平稳的飞行 bumpy flight
再也不能飞翔 That can never fly ; That can't fly
不翼而飞 vanish all of a sudden ; vanish from sight ; take wings to itself
国际不定向飞靶 International Trap ; International Clay Pigeon
我们不飞东京。
“它们当然是在飞!”班里的一个小女孩回答说,“它们叫蝴蝶(butterflies)。如果它们不飞(fly),就只能是黄油(butter)!”
"Of course they're flying!" a little girl in a class replied."They're called butterflies. If they didn't fly, they'd just be butter!"
长时间不飞:只是适合12秒。
That doesn't happen in flight, but it happens during takeoff.
飞到天上之后就不这样了,但起飞的时候确实会这样
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