“烟气”的拼音为：yān qì...

这些火炉冒出来的烟气确实很难闻.These fires produce really obnoxious fumes and smoke.而汽油烟气却靠近地面迟迟不散.Whereas gasoline fumes linger close to the ground before dispersing.空气十分潮湿,所以烟气沉重地悬浮着.The air was so dank that the smoke hung heavily....

“烟气”的英语可以翻译为：exhaust gas，smoke ...