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	purposefulness purposeless purposelessly purposelessness purposely purr purse purser pursuance pursuant pursue pursuer pursuit purulence purulent purvey purveyor purview pus push push-bike push-button pushcart pushchair pushed

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