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Many emerging economies have intervened in currency markets on a huge scale, principally in order to keep export competitiveness up and current account deficits down.

许多新兴经济体在外汇市场中进行大规模干预，主要为了维持较高的出口竞争力及压低经常账户赤字。

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Two small pouches, placed in the bottom of a shoe, are filled with the fluid and generate a current whenever they are compressed by the foot’s up and down motion.

当他们将两个装有该流体的小袋子置于鞋内时，它们就会因人脚抬升和下落的动作而受到挤压，从而产生电流。

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It takes 18 hours to break down our current MH-53s, an additional 12 hours to build them up, and then a functional check flight before you know that it's safe to fly.

CENTERFORSECURITYPOLICY: V-22: A discussion on the way ahead

If Facebook is where you check in with your real-life friends and Twitter is how you keep up with current events, the Tumblr experience can be boiled down to people expressing themselves publicly.

FORBES: Tumblr: David Karp's $800 Million Art Project