a human by captcha
一个人通过验证码
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Numbers that are on neither list will be verified by going through a CAPTCHA routine that to verify that a human, not a machine, is making the call.
FORBES: FTC Awards 'Robocall Challenge' Winners
But even setting aside that human-based cheating aside, the challenge of building a CAPTCHA that can't be understood by automated software has become far more complex.
FORBES: Magazine Article
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