tail pipe flame

例句：

1. 1. The tailpipeflames from the exhaust system are visiblein the night sky.
   尾管火焰从排气系统中可见，在夜空中。
2. 2. Thetailpipe flames were so intense thatthey could be seen from a distance.
   尾管火焰如此强烈，以至于可以从远处看到。
3. 3. The tailpipe flames were usedto indicate the presence of smoke or pollutionin the area.
   尾管火焰被用来指示该地区有烟雾或污染的存在。