naked flame

Big fireworks at arm's length using a taper, never a naked flame.

燃放烟花时,伸长手用香去点引线, 千万不要用明火.

Material type specified on label as polyamide application of naked flame to webbing and thread resulted in melting consistent with synthetic material.

作为明火的聚酰胺应用，在标签上材料类型说明了与人造材料相熔会呈网状和线状。

In a workshop with gray, peeling walls, Lau Wan, one of the last of Hong Kong's neon sign makers, heated a glass tube on a naked flame, effortlessly bending it into the Chinese character for Polytechnic University.

刘稳是香港最后一批霓虹招牌制作师傅之一，在墙皮斑驳脱落的车间里，他用明火给一个玻璃管加热，一边轻松地将它弯曲成“香港理工大学”的中文字样。

Students are forbidden to use the naked flame in the dorm: as alcohol heater, kerosene stove.

禁止在宿舍内使用明火: 如酒精加热器, 煤炉.

a naked flame

明火