高顿网校小编为您解答：What does a rolling three-year period mean?
 
　　Ans：The rolling three-year cycle allows more flexibility for members to earn their CPD hours: a fixed total number of CPD hours (120) has to be completed every three years rather than every year. However, a minimum of 20 CPD hours (verifiable or non-verifiable) has to be achieved each year.
 
　　高顿网校小编寄语：向着某一天终于要达到的那个终极目标迈步还不够，还要把每一步骤看成目标，使它作为步骤而起作用。