短語詞組短語built -on n pump 與發(fā)動機(jī)制成一體的泵Built -on motors for oil burners 燃油器用法蘭式電機(jī)house built on stilts 吊腳樓built on sand 建立在不牢靠的基礎(chǔ)上的;不切實際are built on communication 建立在溝通之上 返回 built on