例句與造句

1. The epd proposed to revise the existing charges for the disposal of chemical waste at the chemical waste treatment centre to meet the objective of achieving full recovery of the variable operating cost for providing the service
   環(huán)保署建議調(diào)整化學(xué)廢物處理中心處置化學(xué)廢物的收費(fèi)，以達(dá)致全數(shù)收回提供有關(guān)服務(wù)的變動(dòng)經(jīng)營成本。
2. It's difficult to find variable operating cost in a sentence. 用variable operating cost造句挺難的