The kids were pushing the roundabout at a giddy speed.

孩子们推动着旋转平台快得令人眩晕。

《牛津词典》

Pushing a DNA molecule through the hole changes the speed at which ions pass.

在将一个DNA分子压过洞的同时，会改变离子通过的速度。

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If you go much faster, the center of lift moves back on the wing, pushing the nose down and increasing velocity, until you soon approach the speed of sound.

如果飞机飞的太快的话，升力的重心就会从机翼转移到前半部机身上，飞机就会下降，速度会接近音速。

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Apple has traditionally blocked outside browsers from its App Store, but competitor Opera Software recently won entry for its Opera Mini application, pushing Skyfire to speed its pace.

FORBES: Skyfire's iPhone Flash Video Workaround

That sort of unbundling will take a while, due to a Byzantine system of contracts, so in the meantime, cable companies can embrace alternative methods of distribution by pushing high-speed internet access, as the Time Warner president said in the article.

FORBES: 400,000 American Homes Ditch Cable, And Cord-Cutting is Here to Stay

And it is pushing into high-speed wireless and new products to extend optics to metropolitan networks and right on down to office buildings.

FORBES: Lighting up Nortel