解锁文档或教科书解决方案和解释是什么意思？
解锁文档或教科书解决方案和解释使您能够完全查看它。对于整个课程英雄订阅，请访问您的帐户页面以访问您之前解锁的所有文档和教科书解决方案和说明。
What does it mean to unlock a document or Textbook Solution and Explanation?
Unlocking a document or Textbook Solution and Explanation gives you the ability to fully view it. For the entirety of your Course Hero subscription, visit your account page to have access to all documents and Textbook Solutions and Explanations you’ve previously unlocked.
是的。如果您购买了 Premier 会员资格，只要您继续您的会员资格，您的解锁次数就会重置为每 30 天 30 次。一旦您的会员资格到期，解锁也会到期。
如果您通过上传获得解锁，它们将在您收到后 30 天到期。
If I don’t use all my unlocks, will they expire?
Yes. If you purchased a Premier Membership, your Unlocks will reset back to 30 every 30 days as long as you continue your membership. Once your membership expires, the Unlocks expire as well.
If you received Unlocks through uploading, they will expire 30 days after you receive them.
