“I didn’t want to tell them how I’d done it, but I didn’t want to be impolite, either, ” Kearns recalls.

卡恩斯后来回忆到，我真的不愿告诉他们我的发明的原理，但我又不愿意显得过于粗鲁无礼。

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“I didn’t want to tell them how I’d done it, but I didn’t want to be impolite, either, ” Kearns recalls.

卡恩斯后来回忆到，我真的不愿告诉他们我的发明的原理，但我又不愿意显得过于粗鲁无礼。

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