It is a blank space, in my case.
在我们这个例子中是空格。
The occupation system has a strong value declarative function, but it is a blank space in the civil law in operation of China.
占有制度在我国现行民法中尚属空白，但占有制度本身具有强烈的价值宣示功能。
When you use hover with sprites it makes for a seamless transition, unlike when you load the file on the hover state, which leaves a blank space until that file is loaded.
当你使用sprites制作悬停翻转效果时图片更替看起来间隔时间非常短。不同于翻转状态时加载文件，留下大量的空白直到该文件完全被加载。
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