grinding down is grind down's Present Participle

grind down

US 
UK 
  • na.碾碎;折磨;虐待;磨碎
Simple Present:grinds down  Present Participle:grinding down  Past Tense:ground down  

Sample Sentence

Definition:
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Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard