Price match not valid for sale , special , special order or close out items . we will not price match loss leader items . we reserve the right to limit quantities.

降价出售，特价出售，特殊订货或抛售商品不在价格竞争范围内。我们不会与亏本抛售的产品进行价格竞争。我们保留限制产品数量的权利。

youdao

For any approximation to be valid it must provide a result that is in some sense close to the solution of the original problem.

任何有效的近似式必须在某种意义上提供一个接近于原问题解的结果。

youdao

How close is this number to the total number of valid URLs on your site?

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