Bed gravity is an irresistible force that draws you back to bed, or toward any mattress, couch, or other soft horizontal surface.

“床重力”是一股让你难以抵抗的力量，能将你拉回床、床垫、沙发或者其他一切软的可以平躺的物件上。

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The moveable horizontal surface of the empennage used for pitch trim.

飞机尾翼的可动水平面，用来控制俯仰配平。

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This paper describes the method of dynamic optimum design for horizontal surface grinding machine structure.

本文阐述了平面磨床结构的动态优化设计方法。

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This is a special type of Earth model which traces its idealised "horizontal" surface - the plane on which, at any point, the pull of gravity is perpendicular to it.

BBC: Europe's Goce satellite probes Earth's gravity

The Microsoft Surface, a horizontal touch-screen computer with neither keyboard nor mouse, will go on sale in November.

ECONOMIST: Computer interfaces

Unfortunately, tragedy can strike with as simple an act as brushing one's elbow across the table, and that's all it took for me to knock my smartphone right onto a hard surface -- facedown in a perfectly horizontal position (the worst imaginable angle).

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