单词	rat-a-tat
释义	rat-a-tat noun ˈra-tə-ˌtat  variants or rat-a-tat-tat ˌra-tə-ˌta(t)-ˈtat  : a rapid succession of knocking, tapping, or cracking sounds Word History Etymology imitative First Known Use 1681, in the meaning defined above
随便看	in-a-door in-a-door bed in-and-in in-and-out bolt in-and-out bond in-and-out plating in-and-out system in-between in-box in-boxes in-clearing in-contact in-country in-depth in-flight in-goal in-grade in-ground in-group in-groups in-home gallanted gallanter gallantest gallanting

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