上述数据是在信号接收良好的时候测得；实际情况是，起码在今年，如果你不在主要城市，你很可能用不了4G网络。（译者注：目前网络只覆盖大城市市区）
Those figures came with good reception; if you leave a major urban area, you'll probably leave 4G behind too, at least for this year.
比如，在发现的href为空的地方不需要添加链接—格式良好的文档不应该出现这种情况，但是有时候确实会出现。
For instance, you don't need to add cases where the found href is null - something that shouldn't happen with a well-formed document but sometimes does.
因为我经常发现，当我用心时时，我只需往往很短的时间就能把事情搞定——尤其是在我休息良好的时候情况下。
I often find I can crack things in a fraction of the time when I put my mind to it-especially when I am well rested.
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