波兰的经济风云变幻，在稍长的一段时间内需要浮动汇率具有的弹性来保持竞争力，同时保持平滑调整。

As a fast-changing economy Poland might need the flexibility of a floating exchange rate for a little longer to keep it competitive and to smooth adjustments.

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Baker表示，朝前看，Mozilla必须在浏览器竞技场上保持竞争力，应该将其视野拓展到移动和应用上去，并保持其持续性。

Baker states that looking forwards Mozilla must remain competitive in the browser arena, should broaden its scope into mobile and apps and maintain its sustainability.

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无论你的记忆力倾向于哪种类型，至少要将你记忆的内容保持到考试时候，这是你能保持记忆牢固的唯一途径。

Whether you prefer the type of memory, at least you have to remember to keep the contents of the examination, you can maintain that this is the only way to a solid memory.

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Retention went up for them; performance went up; they were more likely to advance in their organization and stay in their organization.

他们的保持力增加，工作表现出色;,在公司更有可能被升职,并留在公司里。

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The fact that you don't need a force for it to move forever at a given speed in a given direction, that's not obvious, because in daily life you don't see that.

对于物体不需要力的作用就能保持,确定的速度和方向持续运动这一事实,它并非显而易见,因为在日常生活中你看不到这种情况

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