1The company uses a special process to purify the water before it is sold in bottles.
2Do you think it is possible to purify the air in a polluted city?
3The new machine can purify up to 1000 liters of water per hour.
4To purify your skin, wash your face twice a day with soap and water.
5Scientists are working to purify the oil that spilled into the ocean to save the marine life.