underpins is underpin's Simple Present

underpin

US [ˌʌndərˈpɪn]
UK [ˌʌndə(r)ˈpɪn]
  • v.支持;从下方支持;加固
  • 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