The occasional author who is not affiliated with an institution or company, and who has no research sponsor, could be exempted from page charges, with costs levied on institution-based authors.
偶有作者不隶属于某个机构或公司,也没有研究赞助者,可以免除页面收费——只向隶属某机构的作者收费。
Photocopy charges are limited to 10 cents a page.
影印文件开支限每页十美分。
Because no power is used unless the reader changes the page, devices with the technology could go as long as 20 books between battery charges.
由于只有当用户翻页时才会耗电,所以采用该技术的装置能让读者连续看20本书而不需要充电。
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