Fill in the shift form carefully .
仔细填好值班报表。
In the media world, this has taken the form of a shift from ad-supported free content to freemium - free samples as marketing for paid services - with an emphasis on the "premium" part.
媒体世界已经从广告支持的免费内容向免费增值模式转变：用免费的样本为付费服务做营销，重点在于附加收费部分。
The shift from the rolled scroll to the folded codex as the dominant form of the book radically affected readers' conceptions not only of books, but of what kinds of reading were possible.
书籍的主流形式由卷轴变为翻页书，这彻底改变了读者对书籍以及各种可能的阅读材料的设想。
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