"Flip" is a short, sharp word for a short, sharp action. "Flip-flop" arose in imitation of the action of going quickly back and forth.

他们听上去都是拟声词 flip音节短促尖锐 用以描述快捷疾速的动作.flip-flop的发音模拟快速往复的动作.flap听上去不正象旗帜和船帆在风中拍打的声音吗?

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It appears that after the sharp decline on the market valuation has been a defensive action.

看来，在之后的市场价值大幅度下降是一个防御行动。

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To the acute person who are sharp on the sense and discernment, the rich and subtle show in the posture, expression, tone and the action ect, is the port of leaking.

流露内在心理的动作、姿势、神情、语气等非常多，而且极其丰富和微妙，对感知觉和洞察力非常敏锐的人而言，所有的这些神情动势都是“泄密”的端口。

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Users can lock-on to fast moving subjects throughout the frame using 3D tracking to create sharp images of fast action, or use one of the other modes including single point AF, Dynamic AF and Auto-Area AF.

ENGADGET: Nikon D5200 to reach US photographers in late January for $900

There is strong and often inventive action, genuinely sharp dialogue, and a real story being told.

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But without decisive action and a sharp focus, you might never get a chance to refuel.

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