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Linux 软件免费装
在这里免费安装WordPress以及其他软件
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logical captcha
WordPress Captcha and Anti Spam Plugin by Captcha Bank
Captcha Bank is a anti-spam captcha plugin for WordPress forms that adds secure image captcha or math captcha to prevent spam.
WP reCaptcha - Appsaur.co
WP reCaptcha authenticate the visitor is a human verifying by Google ReCaptcha