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验证
yàn​zhèng HSK7

to verify

Definitions Defs Origin Strokes Stroke Words Sentences Sents
  • 概念验证 gài​niàn​yàn​zhèng proof of concept
  • 验证码 yàn​zhèng​mǎ verification code
    verification code or CAPTCHA; a code used in computing to confirm that a user is human, often appearing as a combination of numbers and letters in a distorted image