- 问题详情:Singaporeisbuildinganairportwhereindoortrees,waterfallsanda‘rainvortex’sitalongsidecheck-inqueues,waitingroomsandbaggagecarousels(传送带).Whereoncesatacarpark,therewillsoonbethousandsoftreesandplantsacross22,000sqmetresoflandscapedindoorpar...
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