Its real purpose is the launching and retrieval of small aeroplanes in flight.

它的真正目的是发射和找回飞行中的小型飞机。

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Airplanes retract their landing gear while in flight for the same reason.

出于同样的原因，飞机在飞行时收回起落架。

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"There's a lot of technical terms in aviation and getting those translated properly and getting transmitted to them in a timely manner, especially when in flight, is a huge challenge.

VOA: standard.2009.12.13

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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And she has to catch a flight, and you know the flight is going to leave in three hours and she's taking her time.

她马上得去赶飞机，你知道飞机在三个小时后就要起飞了。可她还在磨磨蹭蹭。

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The shards represent small fragments of magma ejected from a volcano that have "frozen" in flight.

BBC: Toba super-volcano catastrophe idea 'dismissed'

Whether in flight or in repose, they appear to be choreographing their own lives.

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"Major Tim" Peake has a degree in flight dynamics and is a qualified test pilot.

BBC: UK astronaut Tim Peake to go to International Space Station