english: For example, you could create a rod that can easily be placed inside water bottles for individual use or you could create a porous filter that can filter water for families.
non_english: Na primer, mogli biste da napravite šipku koju biste lako stavili u bocu za ličnu upotrebu ili biste mogli da napravite propustljiv filter koji može da pročišćava vodu za porodice.