You cannot use an embedded expression in an XML comment literal because the embedded expression delimiters are valid XML comment content.

不能在xml注释文本中使用嵌入式表达式，因为嵌入式表达式分隔符是有效的XML注释内容。

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None of them were prepared to comment on this study or discuss the detailed nicotine content of their products.

他们都不愿意对这项研究发表评论，也不愿意讨论他们产品中尼古丁的具体含量。

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However, none of them were prepared to comment on this study or discuss the detailed nicotine content of their products.

然而，他们都不愿意对这项研究发表评论，也不愿意讨论他们产品中尼古丁的具体含量。

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Mr. FIELDS: You know, well, not having seen the film, of course, I can't comment on the content.

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Although China has declined to comment on the content of the reports, it will no doubt be embarrassed by many of the revelations.

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Victim 4's attorney, Ben Andreozzi, said Tuesday that he expects that letters from Sandusky to his client will be introduced at the trial, but he declined to comment on their content.

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