水落管屋面是有组织排水屋面，是指屋面涌水首先收集到檐沟，然后经水落管排到地面。水落管是一般民用建筑屋面排除雨雪水常用的方式。它由格栅排水口、雨水斗和水落管等部分组成，排水引至地面或接入雨水管。
雨水通过集成水槽形成下水落管系统。
Rain water is carried through an integrated gutter and down a downspout system.
建筑严格遵守预防飓风守则，展台设计了铜制直立屋顶，水槽和水落管。
Built to strict hurricane codes, the booth features a copper standing-seam roof, gutters, and downspouts.
有多少人进入所谓的形而上学领域是伪君子，或者对他们所说的毫无主意，不知你对此有何看法——像水落管系统般地向外陈词滥调1990年的栅格程序？
Do you have any idea how many people in the realms of so-called metaphysics are hypocrites or have no idea what they are talking about - spouting forth cliches of the 1990 grid programs?
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