verb🔗Share变为四倍，使成四倍。 To multiply by four."Quadrupling four gives sixteen."四乘以四等于十六，也就是四变为四倍是十六。mathnumberbusinesseconomyChat with AIVocabulary GamePractice Reading
verb🔗Share变为四倍，增加到四倍。 To increase by a factor of four."Our profits quadrupled when we made the improvements."当我们进行改进后，我们的利润变成了原来的四倍。numbermathbusinesseconomyChat with AIVocabulary GamePractice Reading
verb🔗Share铺设四线轨道，四线化。 To provide four parallel running lines on a given stretch of railway."To handle the increasing volume of commuter trains, the railway company quadrupled the tracks between the city center and the suburbs. "为了应对日益增长的通勤列车数量，铁路公司将市中心到郊区之间的轨道铺设成了四线轨道。technologyutilityindustryvehicleChat with AIVocabulary GamePractice Reading
