it's in and out它和退出 it's in and out它和退出 forgive me when i tell you i don't feel i've had enough请原谅我时，我告诉你我不觉得我有足够的 ..
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但因为它全是数字化的，它消除了二手书市场，也消除了任何共享，而且因为作业和考试都是通过准入码进行的，它消除了任何选择退出的能力。
But because it's all digital, it eliminates the used book market and eliminates any sharing, and because homework and tests are through an access code, it eliminates any ability to opt out.
因为它全是数字化的，它淘汰了二手书市场，也杜绝了任何共享，而且因为作业和考试都是通过准入码进行的，它让人们失去了选择退出的任何能力。
Because it's all digital, it eliminates the used book market and eliminates any sharing, and because homework and tests are through an access code, it eliminates any ability to opt out.
首先，它几乎没有任何动态内容 — 只有用户名和登录/退出链接。
First, there is almost nothing dynamic about it anymore — just the user name and login/logout link.
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