他最近的表现让人怀疑他是否适合升职。

His recent performance calls into question his suitability for the promotion.

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His recent performance calls into question his suitability for the promotion.

question 在这里是名词,意思是"疑问、质疑"。call into question 是一个固定短语,表示"对...提出质疑"或"使...受到怀疑"。

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