滤材耗费高，不能过滤真正的污油。
The filter material cost is high, can't filter real oil pollution.
而另外不能过滤的毒气，却不是古人所能制造的了。
But moreover can not filter of poisonous gas, but be not the ancients can make of.
这一资源的过滤不能变更；您不能使用存取控制废弃这一性能。
This filtering of resources cannot be modified; you cannot override this behavior using access control.
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