????:1???????????:??????

2??????????????

3???????????

4?????????

5??????????

????????????????????????????????,???????,?????????,??????????????????????????????“???????????”???????????,??????????“???”?

????500????????????????????????????????????????????“??”,??????????????“?????”,???????????,“??”???,???

????????“???????????”,???????????????????“????”,???????????????“????”?

??????????“?????”?“???????????????”????????????,“?????????????”????????????????????????

“???”?,??????,???????????????????

?“?????”??,???????“????”???????????????????????????,???????

?????,???????????????????,??????“???????”????????,???????????????,“??????‘???’????,??????????”?

???,???,???“?????,??????‘?????????????’????????????????????????”?????

????3????,?????????????,?PVA????,??????????????700??????PVA?????

“?”????,??

????2023?????????????6??????,“?”????,???????????,?????????????????????????,??,????

??????????????,“???”?“???????”?????????????“?”?“???????,‘??????????’????,??‘??’?????”?????

??????“??????????????????”??????????????,????????????????????????????

??????????:????????