The design placed highly toxic material in sealed bunkers that were earlier used to store iron ore.
在设计中，那些高毒性物质被密封在原先用来堆放矿石的库房中。
"So what we have done without any loss of efficiency is to replace expensive and highly toxic material with one that is completely benign and much lower cost in the process," Major said.
“所以，我们完全可以用一种完全良性而且成本低得多的物质来取代这种昂贵且带有剧毒的原料，而且无需承受任何效率损失，”梅杰说。
"So what we have done without any loss of efficiency is to replace expensive and highly toxic material with one that is completely benign and much lower cost in the process," Major said.
“所以，我们完全可以用一种完全良性而且成本低得多的物质来取代这种昂贵且带有剧毒的原料，而且无需承受任何效率损失，”梅杰说。
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