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

2?????????200??500

3??????

4???????

5????????

12???????28??????????,??“??”?????????????

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??,???????“?????????”?6????????28?,????????????6????????,??,??????????“?”??,??,????????????12kg?

??,???“??”??????,??“???????”?“???”??????????,??,?????????“?????????”??????????????,“???????”??,?????????(?? ?????????)

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