1. First, contaminants volatilize out of groundwater.
   第一方面，環境環境有害特性從地下室一般的水都揮發性好，轉化為蒸汽。
2. Elevated levels can volatilize into the air heat preservation board refrigeration water, and maintain long-term food warming effect.
   電纜溝的空氣層可以揮發物掉墻體保溫板冷凝水水，保護過久的墻體保溫效用。