To make this method a little easier, I wrap the access to the variable in a second function that takes a configuration key name and a default value, as shown below.

为使这个方法更加简单，将对变量的访问封装在第二个函数中，该函数使用配置键名及一个缺省值作为参数，如下所示。

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Don't forget to wrap up the story with a one sentence moral, key message, or lesson learned.

不要忘了在故事结尾用一句话来总结故事，这句话可以是箴言、关键信息或学到的教训。

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Word wrap and the Enter Key: One basic word processing feature is word wrap.

字换行和回车键：字处理的一个基本特点是换行。

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