Therefore we must first check if the browser supports the methods or properties we want to use.

因此在使用方法或者属性之前我们必须对浏览器的支持性做必要的检查。

youdao

What people do is check their pages against one browser, maybe two, until it looks right.

人们所做的只是针对某个或某两个浏览器去检查，直到它看起来正常。

youdao

When you have this all setup, check it out in a browser that supports the application cache.

当你将这些设置妥当时，就在支持应用程序缓存的浏览器里测试一下吧。

youdao

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