The rise in global surface air temperature;

全球地表气温上升;

youdao

Normally, volcanic vents are larger and quickly mix with the surface air.

而普通的火山释放气体更多，而且混杂有地表的气体。

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Yet, satellite instruments have generally struggled to achieve accurate measurements of the particles in near-surface air.

然而，卫星仪器通常很难实现近地面空气中细颗粒物的精确测量。

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Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

VOA: special.2009.02.09

Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.

如果你制造一个绝对光滑无摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去

耶鲁公开课 - 基础物理课程节选

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

The balloon of surface air quickly reaches speeds of 100 to 150 mph going straight up!

CNN: The making of a nightmare tornado

The initial "push" upward by the cold front on that balloon filled with surface air is like a child letting a helium-filled balloon go -- it just keeps rising.

CNN: The making of a nightmare tornado

The cargo included Semtex, surface to air missiles and 1, 000 AK47 assault rifles.

BBC: Enniskillen survivors plea to McGuinness over attack