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verso, 左页
the left-hand page of an open book or the backside of a printed page, typically numbered with even numbers in a bound book
A verso is the left-hand page of an open book or manuscript. It is the page that faces the reader's left when the book is open, and it is usually paired with the recto, which is the right-hand page. In a printed book, the verso page is typically numbered on the left side, and it often contains part of the text, illustrations, or other content. The verso and recto pages together form a single leaf, which is a single sheet of paper folded to create two pages.
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