网页验证码的作用是什么意思啊英语

核心提示：CAPTCHA on web pages serves to ensure the authenticity of user actions by distinguishing human inputs from machine inputs. It helps prevent automated attacks like spam and phishing. 网页验证码的作用是区分用户操作和机器操作，确保用户真实性，防止如垃圾邮件和钓鱼网站等自动化攻击。