比方英语的美国遗产字典的附加叁考提供固体和权势巨子的证明给被引证的字劈头。

Additional references such as the American heritage Dictionary of the English Language provide solid and authoritative proof to the cited words' origins.

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因此，哈佛大学，谷歌，大英百科全书，以及美国遗产字典的研究者们，发明了一个工具。

So researchers at Harvard, along with Google, Encyclopedia Britannica, and the American Heritage Dictionary, have come up with a new tool.

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