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underpinned is underpin's Past Tense

underpin

US [ˌʌndərˈpɪn]
UK [ˌʌndə(r)ˈpɪn]
  • v.从下方支持;加固;支援
  • Web巩固;支撑;加强
Past Tense:underpinned  Simple Present:underpins  Present Participle:underpinning  
v.
1.
从下方支持,用东西支撑(建筑物等);加固,使坚固;支援,支持

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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