To generate lift, a bird has merely to tilt its wings, adjusting the flow of air below and above them.

为了产生抬升力，鸟儿们只要倾斜翅膀，对从身体上方和下方通过的气流稍作调整。

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Flying fish rely on a similar flow of accelerated air from their pectoral fins to provide lift to their smaller pelvic fins.

同样，飞鱼借助胸鳍所产生的加速气流，就可以对较小的腹鳍产生一定的提升作用。

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Light's new trick is fancier than a boring push: It created the more complicated force called lift, evident when a flow in one direction moves an object perpendicularly.

但是光的新特性比单纯的推力要高级：光能产生这种更复杂的作用力-提拉力，很显著的例子是一个方向的光通量可以使物体垂直移动。

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In the interim, Wellpoint and UnitedHealth sell at 10 times earnings, 10 times free cash flow, lift their dividends, buy back stock and do add-on deals.

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Sprouse and others theorized in the early 1990s that drugs that blocked these self-defeating autoreceptors could create a faster impact by causing an immediate, long-lasting flow of serotonin that would lift a patient's mood in days.

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