One of those pieces – a wing flap found on a shore in Tanzania – seemed to confirm the theory that no one was at the controls of the plane in its final moments.

现有的残骸之一是在坦桑尼亚被冲上岸的一块襟翼，似乎证实飞机在坠海前无人控制。

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Wing flap, widely assembled in various kinds of airplanes, can increase lift force rapidly in a short time, for an aircraft taking off or landing, and also at some emergency situations.

襟翼在各种飞机上普遍应用，它可以在短时间内增加飞机升力，主要用在飞机起降过程和特殊紧急情况下。

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Sea butterfly: a swimming predatory Marine sea snail. They have two wing-like outgrowths (lower right) derived from their foot, which they continually flap to swim through the water.

海蝴蝶：一只正在游动的食肉性海蜗牛。它们拥有像翅膀一样的由足进化而来的侧翼(位于右下方)，并靠拍打侧翼在水中前行。

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Sometimes all it takes is one more flap of a butterfly wing to unhinge the unstable worker.

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That extra attention to detail has already begun at the Ferrari factory as the team's engineers solved the problem with Alonso's faulty drag reduction system (DRS) -- an overtaking aid which increases the car's straight-line speed by flipping open the top flap of the rear wing -- the day after the Bahrain Grand Prix.

CNN: Ferrari boss: 'We have to be perfect'