1·Vapor Strange vapors rose from the dark lake.
奇怪的蒸汽从黑暗的湖中升起。
2·Tighten the lid securely so that liquid and vapors will be contained.
盖紧盖子这样液体和蒸汽都被密封在里面。
3·Other sources of ethyl benzene include vehicle exhaust, petrol pump vapors and cigarette smoke.
其它一些乙苯的来源包括尾气排放、汽油泵蒸汽以及吸烟。
4·While I struck it on the box, again and again, and then fumbled for a better match, gasoline vapors were flowing invisibly back down the slope toward where I'd left the can.
我一次又一次地擦火柴，擦不亮再摸索出一根新的，这样汽油的蒸汽顺着斜坡悄无声息地蔓延到汽油罐周围。
5·When the oil is heated, the first vapors to rise are cooled and become the finest petrol.
油加热时最早升起的蒸汽冷却后就为最好的汽油。