当气体冷却，任何有毒的物质会被封在玻璃状的熔渣中，被安全的填埋。
When the gas is cooled, any hazardous elements in the waste end up sealed in a glassy slag that is safe to put into landfill.
当气体冷却，任何有毒的物质会被封在玻璃状的熔渣中，被安全的填埋。
When the gas is cooled, any hazardous elements in the waste end up sealed in a glassy slag that is safe to put into landfill.
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