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.
有时候，你不能提前知道哪些植物会有很好的效果、需要更多的阳光还是阴凉，所以你需要弹性调整。
Sometimes you can't know ahead of time just which plants will respond well or want more sun or shade so you need to be flexible.
调整过程也反映出国内需求的弹性。
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