YSlow alerts you if multiple names must be looked up.
如果必须查询多个名称，YSlow 会发出警告。
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Use YSlow to profile and measure your website load times.
使用Yslow概览与测量网站加载时间。
Figure 2 shows the results of the YSlow performance analysis.
图2显示了YSlow性能分析的结果。
YSlow is another great tool for looking into site speed issues.
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