These tanks cover an area about the size of a soccer field, and it is here that you realize how much the neighbors would complain if the air - purifying system were not so effective.
या टाक्यांमधून पाणी मंदगतीने वाहत असताना, तेल आणि ग्रीससारखे पदार्थ पाण्यावर तरंगतात आणि ते काढले जातात.