当您丢弃陈旧的代码，以更好的代码取而代之的时候，您可以保留内容和显示。
You can keep the content and the presentation while losing your older code to something better.
如果不进行系统设置来丢弃邮件或在特定时间存储邮件，您收到的电子邮件数量将会不断增加。
The number of e-mails you receive grows if you do not set the system to discard them or store them at specific times.
这不会影响原图，且您的更改会被丢弃。
You will not affect the original and your changes will be discarded.
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