I think it's clear, the position of the object with respect to the ground, this vector is the same as the position of the object with respect to the plane, plus the position of the plane with respect to the ground.

我觉得很明显,物体相对于地面的位置,这个矢量等于,物体相对于平面的位置矢量,加上物体相对于地面的位置矢量

耶鲁公开课 - 基础物理课程节选

"Our main version is a spontaneous move by the stabiliser into an extreme position that caused the plane to make a steep climb at high speed, " Mr Chernov told Russian NTV television.

BBC: Moscow crash jet 'stabiliser jammed'

They became aware of their plane's position only after a flight attendant asked about the landing time, according to the NTSB.

CNN: Pilots of wayward jet lose licenses

"It consolidates the 787's position as the future transatlantic plane of choice, " said Doug McVitie, Managing Director of consultancy firm Arran Aerospace.

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