Then day by day, we know how to connect a sound or an utterance with certain solid existences beside us, till we learn how to speak them.

然后一天天我们知道了怎样把人声和话语与我们身边的特定存在联系起来，直到我们学会了说它们。

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We are glad to learn that you opened a credit with the National Bank, in favor of Messers. Smith & Co. , for the amount of $100,000 covering the said order available till December31.

我们很高兴得知贵公司对此批订货， 已通过国家银行开出以史密斯公司为受益人，面额为100000美元， 12月31日前有效的信用证。

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