Chlorine is used to disinfect water.氯用来给水消毒。Plough deeply in 30cm, and insolate in the sun to disinfect.深耕30厘米,曝晒日光消毒。Disinfect the wound before you bandage it up.伤口包扎之前应先消毒....
Chlorine is used to disinfect water...氯用来给水消毒。Plough deeply in 30cm, and insolate in the sun to disinfect.深耕30厘米,曝晒日光消毒。Disinfect the wound before you bandage it up.伤口包扎之前应先消毒.Chlorine is used to disinfect water.氯用来给水消毒。...