🔊 点按以下视频播放声音 A lit flame or flare is used in the drilling and oil field business to burn off dangerous Hydrogen Sulfide (H2S) in a process known as Flaring. Sulfur dioxide is the product of combusting H2S byu/DrFetusRN ininterestingasfuck ♥️ 6136 赞好 「图片」放大「视频」😎
