translation.en: An engineering college in Lima designed a giant advertising billboard that absorbs air humidity and converts it into purified water, generating over 90 liters of water every day.
translation.zh: 于是利马市的一所工程学院 设计了一种大型广告牌， 它能吸收空气中的水汽， 并转化为纯净水， 每天能产生超过90升水。