???????????2??18???? ?18??,?,???????58??

?????,??????????58????????,??????13???????????,??????????????33??????????5???????????????17?,15?????????????????????4?????

??????,??,?????????????4??????,??????????58???,??45????????????????????,???

?????,????????????????,????????????????????????????????(MMR???)?????????????????,?????????

?,??“??30?????????????????”?

????????,??????????????????8?????????????????????

??????,????,??????????????????????????????????????????????????????????????????????????,?????????????(????????????) ????:???

??

??:???????????,??????????,??????????????