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(rèn)計(jì)算機(jī)使用者是人而非機(jī)器的系統(tǒng)）驗(yàn)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(jī)鑒別驗(yàn)證碼系統(tǒng)，轉(zhuǎn)而采用界面更為友好的辦法。 返回 captcha