单词	check digit
释义	check digitˈcheck ˌdigit noun [countable] technical the number on the far right of a bar code. It is used to check that the information on the bar code is correct.
随便看	prosaic prosaically proscenium proscribe proscription prose prosecute prosecution prosecutor proselytize proselytizer proselytizing Proserpina prosodic prosody prospect prospective prospector prospectus prosper prosperity Prospero prosperous prostate prosthesis

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