单词	Grim's ditch
释义	Grim's ditch noun variants or Grim's dyke ˈgrimz- or less commonly Grime's ditch or Grime's dyke ˈgrīmz- : any of several ancient entrenchments found in the British Isles some of which are prehistoric Word History Etymology origin unknown
随便看	Eötvös balance Eötvös unit f F and A F and D F and F F center F clef F distribution F horn f i F layer F major F minor F region F star f's f-bomb F-flat F-flat major F-flat minor f-flats F-head f-hole f-number

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