当烟被点燃时，融合了四千种化学品的气体被释放出来，其中包括一氧化碳和氢氰酸。
As tobacco cigarette burns a potpourri of4000chemicals is released including carbon monoxide and hydrocyanic acid.
当烟被点燃时，融合了四千种化学品的气体被释放出来，其中包括一氧化碳和氢氰酸。
As tobacco cigarette burns a potpourri of4000chemicals is released including carbon monoxide and hydrocyanic acid.
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