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。

youdao

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。

youdao

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

FORBES: Change During Tough Economic Times Can Kill

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'