Boeing wants to use existing wing and tail control surfaces that shift up and down about 20 degrees in a coordinated fashion to disrupt the vortical flow.

波音公司则利用现成的机翼与机尾控制面，让它们互相协调、上下移动20度，以扰乱涡流。

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Shift up when you reach 30 mph.

车速达到每小时30英里时要换高挡。

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Shift up when you reach 30 mph.

车速达到每小时30英里时要换高挡。

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