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	musk seed musk sheep musk shrew musk thistle musk tree musk turtle musk xylene muskadel muskat muskat nut muskats musked muskeg muskeg moss Muskegon muskegs muskellunge muskellunges muskelunges musket musket arrow musketeer musketeers musketoon musketoons

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