Publishers have responded to the demand that they make their product free to readers by charging their writers fees to cover the costs of preparing an article.
为满足免费向读者提供文献的需求，出版机构通过向作者收费来负担其准备论文的费用。
Publishers have responded to the demand that they make their product free to readers by charging their writers fees to cover the costs of preparing an article.
为满足免费向读者提供文献的需求，出版机构通过向作者收费来负担其准备论文的费用。
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