Additionally, the entire microscope sits on air cushions to remove external vibrations.

此，整个显微镜置于空气垫上以消除动。

So these are air cushions, essentially.

所以从本质上来，些是气垫。

Without this engine to form the motive power and the pneumatic tire to give it four air cushions to run on, the automobile would never have progressed beyond the steam carriage stage.

如果有种发动机形成动力，有充气轮胎为其提供四个气垫以供行驶，汽车将永远无法超越蒸汽车阶段。