求翻译
For the quantities between 25001-45000 motons 2$/ton rebate will be applied provided that the quantity of 45000 mtons is reached,

For the quantities between 45001-65000 motons 3$/ton rebate will be applied provided that the quantity of 65000 mtons is reached,

Over the quantity 65001 motons 4$/ton rebate will be applied.

Question

求翻译
For the quantities between 25001-45000 motons 2$/ton rebate will be applied provided that the quantity of 45000 mtons is reached,

For the quantities between 45001-65000 motons 3$/ton rebate will be applied provided that the quantity of 65000 mtons is reached,

Over the quantity 65001 motons 4$/ton rebate will be applied.

Answer

当质量达到45000公吨的时候，250001-45000公吨这一部分将以2美元/吨的价格进行退税；
当质量达到65000公吨的时候，450001-65000公吨这一部分将以3美元/吨的价格进行退税；
超过65000公吨的部分将以4美元/吨进行退税。