单词	grum
释义	grum adjective ˈgrəm grummer; grummest : morose, glum, sour, surly a very grum countenance Mary S. Watts grumly adverb grumness noun plural -es Word History Etymology probably blend of grim and glum
随便看	rotating ring rotating-wing aircraft rotation rotation axis rotation crossing rotation grazing rotation spectrum rotation twin rotational rotational fault rotational inertia rotational loss rotational motion rotational quantum number rotational specific heat rotational spectrum rotational vector rotationally rotations rotative rotatively rotator rotator cuff rotatores Rotatoria

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