Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient, but still carry great cost.

变化的建筑法规，不断发展的品味，加上保养这些美丽而老旧的指示牌所需的高昂成本，都让商家们更欢迎 LED 灯，虽然 LED 灯节省能源，但是成本依然很高。

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Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.

不断变化的建筑规范、人们逐渐发展的品味，以及维护这些精美的旧标志牌的高昂成本，让企业欣然接受了发光二极管。它们节约能源，但成本仍然很高。

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As long as the number of potential random codes is large compared to the number of records to search, this simple approach can be efficient.

只要潜在的随机代码数比要查找的记录的数目大，这个简单的方法就是有效的。

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