youdao

Because you can't be sure this method will be called only once, you have to perform a little character management, as Listing 4 shows.

因为不能肯定这种方法只被调用一次，所以必须进行一些字符管理工作，如清单4所示。

youdao

Also be sure the method returns a value that the stylesheet will use.

还要确保方法返回一个样式表将会用到的值。

youdao

To read more, see The Stop-Loss Order: Make Sure Your Use It, A Logical Method Of Stop Placement and Trailing-Stop Techniques.

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