mouthpiece ['mauθpi:s]

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代言人（名詞,，非正式用語）

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(noun, INFORMAL) A spokesperson who represents a person or organization in authority (NOTE: sometimes used with contempt)

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EXAMPLE: The company’s president is merely a mouthpiece for the board of directors which makes all the decisions in private meetings.

這家公司的董事會在私人聚會上制定所有決策，總裁只是董事會的傳聲筒,。

highly debatable point

爭議很大的問題

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Collocation describing an opinion about which many people disagree.

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EXAMPLE: The famous economist was confident that the recession would end in a few months, but others considered that a highly debatable point.

這位著名經(jīng)濟學(xué)家相信,，衰退將在數(shù)月內(nèi)結(jié)束，但其他人認(rèn)為這一觀點存在很大爭議,。