请注意如下一些特点：餐巾不应塞进衣领或背心内，而应放在腿上；

A few characteristics to note: the collar or vest but should be placed across the lap;

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一旦构建了这个工程(请注意，我们仍然需要设置类路径，这件事我们稍后再做)，它应该大致如下面的图5所示。

Once this project is built (note that we still need to set the classpaths which we will do subsequently), it should resemble Figure 5 below.

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请注意，正如下面所描述的，密钥同样也被加密了。

Note that the key is also encrypted as described below.

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