captcha

劍橋詞典

internet & telecoms   specialized
a system that is used to make sure that a human being, not a machine , is using a computer . The person may be asked to type in a series of letters or numbers , or to complete a simple game . The word captcha is made up of the first letters of words in the phrase Completely Automated Public Turing test to tell Computers and Humans Apart.
（用于確認計算機使用者是人而非機器的系統(tǒng)）驗證碼
The leading ticket sales website is to stop using the human verification system captcha in favour of something more user-friendly . 幾家最大的售票網(wǎng)站放棄了人機鑒別驗證碼系統(tǒng)，轉(zhuǎn)而采用界面更為友好的辦法。 返回 captcha