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

2?????????

3?????????

4????????

5???????????

????????11???????2???? (?? ?????????)??,?????????????2?16??,???????????2???????????16??????30??????

???????????????????,2???~4??,??,?????30??????????????????????

??????,????????,???????????????24??,????????????????????????????????????????7?????????????100-150??????????;????????????????????????????8??????????50-80??????

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