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DEFINITIVE EXAMPLES 权威例句〔LET/ALLOW〕Lanterns and heaters are allowed on Forest Service lands if they are fueled by propane. 提灯和取暖器若使用丙烷作为燃料，就可以在林务局所辖的林区里使用。朗文写作活用〔alkane〕Methane and propane are alkanes.甲烷和丙烷是链烷。牛津高阶〔bottled gas〕Gas, such as butane or propane, stored under pressure in portable tanks.瓶装煤气：储存于高压下的可移动容器中的气体，如瓶装丁烷或丙烷美国传统〔cylinder〕The victims died when propane gas cylinders exploded.受害者是在丙烷气罐爆炸时死去的。外研社新世纪Natural gas is composed of methane, ethane, propane and butane.天然气由甲烷、乙烷、丙烷和丁烷组成。剑桥国际Propane is so clean-burning that there is almost no smoke.丙烷烧起来非常清洁，几乎没有烟。剑桥国际 |