verb🔗Share使成四倍，四倍化。 To multiply by four."Quadrupling four gives sixteen."把四乘以四，结果就是十六。(Bǎ sì chéng yǐ sì, jiéguǒ jiùshì shíliù.)mathnumberChat with AIVocabulary GamePractice Reading
verb🔗Share是四倍，翻两番 To increase by a factor of four."Our profits quadrupled when we made the improvements."自从我们改进之后，我们的利润翻了两番。numbermathamountChat with AIVocabulary GamePractice Reading
verb🔗Share复线化，四线并行。 To provide four parallel running lines on a given stretch of railway."The railway company plans to quadruple the tracks between the two major cities to increase train capacity and reduce delays. "铁路公司计划在两个主要城市之间将铁路复线化，改成四线并行，以提高运力并减少延误。technicalindustrymachinetrafficvehicleChat with AIVocabulary GamePractice Reading
adjective🔗Share四倍的, 四重的。 Being four times as long, as big or as many of something."The company's profits are now quadruple what they were last year. "现在这家公司的利润是去年的四倍。numberamountmathChat with AIVocabulary GamePractice Reading
