can be easily made to demonstrate英语作文
A“solarstill”canbeeasilymadetodemonstratethatthereisoftenwaterineventhedriestplaces.wecancollectwaterwithlittlemorethanasheetofplasticandacontainer.Wefirstdigaholeseveralfeetdeepinthegroundandplacea...
A“solarstill”canbeeasilymadetodemonstratethatthereisoftenwaterineventhedriestplaces.wecancollectwaterwithlittlemorethanasheetofplasticandacontainer.Wefirstdigaholeseveralfeetdeepinthegroundandplacea...
A“solarstill”canbeeasilymadetodemonstratethatthereisoftenwaterineventhedriestplaces.wecancollectwaterwithlittlemorethanasheetofplasticandacontainer.Wefirstdigaholeseveralfeetdeepinthegroundandplacea...