单词 | captcha |
释义 | captcha(ˈkæptʃə) noun a test designed to determine whether a computer user is a person or a machine, eg by asking the user to decipher a distorted image Word origin C21: acronym for C(ompletely) A(utomated) P(ublic Turing Test to) T(ell) C(omputers and) H(umans) A(part) |
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