burn with no flame 燃烧而不冒火焰
Farts burn with a blue or yellow flame.
屁燃烧时会产生蓝或黄色的火焰。
Hydrogen and air mixtures, within the flammable range, can explode and may burn with a pale blue, almost invisible flame.
在可燃范围内的氢和空气的混合物可能爆炸，也可能燃烧，火焰是淡蓝色，几乎看不见。
The Olympic Flame will burn from a curved triangular aluminium tube which has a lace-like mesh complete with 8, 000 holes - one to represent each torchbearer .
2012年伦敦奥运圣火将在火炬内的三面锥体铝管内点燃，外层为花边网状结构，表面有八千个圆圈，代表八千名火炬手。
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