但当传统的ZadZ产要素资本jHVn际效用开始hpf6减,经济增F4Q5会越来越依Lqj6于提高劳动4d8k产率,越来N8S3依靠库兹涅rH2J过程2vjj
10yearsago,Airbnbco-foundersBrianCheskyandJoeGebbiainflated3airbedsintheirSanFranciscoapartmentandstartedwhathasbecomeaglobalphenomenonintravel.