把内容化成背景并不仅仅会增加其清晰度；它也会提高生产效率，因为信息变得可执行了。
Putting content into context not only adds clarity; it improves productivity as well because the information is more actionable.
Firefox 3.1Beta2的表现有点出人意料，对于局部变量执行的效率非常高，但随着作用域层数的增加，效率便大打折扣。
Firefox 3.1 Beta 2 was somewhat surprising as local variable writes were very fast but performance degraded significantly once the variable was out of the local scope.
Firefox 3.1Beta2的表现有点出人意料，对于局部变量执行的效率非常高，但随着作用域层数的增加，效率便大打折扣。
Firefox 3.1 Beta 2 was somewhat surprising as local variable writes were very fast but performance degraded significantly once the variable was out of the local scope.
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