Mildewy become angry: this kind of question happens in damp paint surface more if lunt condenses in glass and metallic surface constant meeting produces the blotch of palm black.

发霉变色：这种问题多发生在潮湿的油漆表面，如水汽凝聚在玻璃和金属表面时常会产生棕黑色的污斑。

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The evaporation from the leaf surface causes a constant compensatory suction of water.

叶片表面的蒸发作用产生了持续的代偿吸水性。

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Constant wheelchair use will scuff almost any floor surface.

经常有轮椅在地板上走动，几乎任何地板都会有所磨损。

《柯林斯英汉双解大词典》

When you're falling to the surface of the Earth, you are describing a problem of constant acceleration.

当你讨论下落问题时,你在描述一个加速度恒定的问题

耶鲁公开课 - 基础物理课程节选

It is a dynamic planet whose surface is in constant flux.

ECONOMIST: Martian chronicles

Compared with the sluggish air on Earth, the Martian atmosphere is in constant motion: between the surface and six feet above it, temperatures can vary by as much as sixty degrees.

NEWYORKER: The Martian Chroniclers

But beneath the surface, there is the CIA officer's constant and often uncharitable assessment of the target's aspirations, fears and desires.

WSJ: The Spy Who Turned Me