turn on the tap
    get some liquid soap
    scrub your hands
    rinse your hands
    turn off the tap and don’t leave the tap running
    dry your hands with a towel
    打开水龙头
    挤点洗手液
    搓洗双手
    冲洗双手
    关掉水龙头，不要让水龙头一直开着
    用毛巾擦干双手