Actually, we're going to do this step quite a few times over during the rest of the tutorial, so it's quite important to learn (and quite simple).
实际上，在剩下的教程中，我们还要用到好几次的置换，所以学习如何使用置换就很重要了(也很简单)。
I am running out of room here to describe those, so let me point to a tutorial about them and mention that I quite like them, especially how they are applied to the JAX-WS provider programming model.
这稍微有些偏题，您可以参考 相关的教程；另外还要指出的是，我非常喜欢这些东西，特别是其应用到JAX-WS提供者编程模型的方式。
We've done a lot in this tutorial, but we still have quite a bit of work in front of us.
在本篇教程中，我们做了很多，但仍有很多工作摆在我们面前。
We've done a lot in this tutorial, but we still have quite a bit of work in front of us.
在本篇教程中，我们做了很多，但仍有很多工作摆在我们面前。
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