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	infantry infantryman infatuated infatuation infect infected infection infectious infectiously infer inference inferential inferentially inferior inferiority inferiority complex infernal infernally inferno infertile infertility infest infestation infidel infidelity

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