That AA batteries are standardized makes them more readily accessible, helps drive down their price through competition and economies of scale, and thus makes the AA battery more valuable.

比如说双a电池的标准化使得它更容易被买到，而且竞争和规模效应使得产品价格下降，从而使得双a电池的效用更高。

youdao

The rating agency also lowered its rating on Portugal, to a -; a day later it downgraded Spain from AA + to AA.

标准普尔也降低了葡萄牙的评级到A -；一天后它再次把西班牙的评级从AA +降低到AA。

youdao

I always log into AA last and purchase from the AA window to ensure I'll receive my miles.

我常常在最后登录AA，然后从AA窗口购物以确定我收到奖励的里程数目。

youdao

He could only say aa aa aa, no more than that for some moment.

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The AA's Mr King said "76% of AA members are cutting back on journeys, household expenditure or both, due to the high cost of fuel".

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"Effective October 7, American will operate all JFK flights from the AA terminals with AA airplanes, " said Chairman Bob Baker in a statement to TWA employees.

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