The production cost is an issue here. 生產(chǎn)費用才是個(gè)問(wèn)題。
Emphasis on pollution abatement may cause recovery systems to be installed, especially if production cost can be brought near the break-even point. 消除污染的強烈要求可能促使建立各種回收系統,要是生產(chǎn)費用接近不賺不負的話(huà)更是如此。