In particular, we have been rotating things about just a point in the plane What you could imagine also is instead you have your solid.

特别地，绕平面上一点旋转物体，同样可以想象，旋转一个实体。

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Learning plane geometry well is the foundation of learning solid geometry well.

学好平面几何是学好立体几何的基础。

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In the mid-column design of gabled frames, the selected solid web section, isn t satisfied by in-plane stability checking because of the biggish out-plane effective length.

门式刚架的中柱设计中，常因为平面外计算长度较大，所选实腹式截面无法满足平面外稳定验算，从而导致用钢量增加。

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Along the perimeter, rising ramps accentuate the elevated plane of the lawn, while colossal wedges of solid granite form an embankment emerging from the riprap at the water's edge.

WSJ: Louis Kahn | Four Freedoms Park | Louis Kahn's Four Decades to Freedom | By Julie V. Iovine

Overcoming the fear of flying begins with a solid trust in the aviation industry and the ability of the plane, the pilot and everyone involved in the safety of the flight to be competent.

CNN: Seeing crash reports can worsen flying phobia