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1·Methane is a colorless, odorless and flammable substance which forms a major component in natural gas.

甲烷是一种无色，无味，易燃物质，是天然气的重要组成部分。

2·The spell seems to involve some sort of fire spirit, not just a flammable substance, since a flaming figure is briefly visible overhead when the firebomb bursts.

因为在火炸弹爆炸时，一个着着火的人形轮廓在上空短暂的出现，所以这个符咒不仅仅是由可染物质组成的，它似乎包括了一些火灵魂。

3·All flammable materials contain phlogiston that is liberated in burning, leaving the dephlogisticated substance in its true calx form.

所有易燃材料均含有在燃烧过程中释放的发火物质，使“去表皮化的”物质保持其“真正”的杯状形式。

4·The phlogiston theory states that all flammable materials contain phlogiston that is liberated in burning, leaving the dephlogisticated substance in its true calx form.

金属是灰碴与燃素的化合物，加热释放了燃素而剩下灰碴。总的说来，燃素为一切可燃物体的根本要素，油、脂、木、炭及其他燃料含有特别多的燃素。

5·Because cyclopentane is a flammable and explosive substance, the station with large quantity of it belongs to major hazard installation.

广东科龙集团无氟生产线中的预混站是使用环戊烷危险物品配制发泡剂的重大危险源，燃烧爆炸事故风险较大。