petroleum n．石油
例句：Any new source of energy will be welcome, as there is a shortage of petroleum.
由于石油短缺，任何一种新能源都会受欢迎。

gaseous adj. 气体的，气态的
例句：Water is the same substance whether in solid, liquid or gaseous state.
不管水处于固体、液体或气体状态，它都是同一种物质。

gasp v．喘息，气喘
例句：She gasped with surprise at the unexpected news.
听到意外的消息，她惊讶地吸了一口气。

petrol n．汽油
例句：The police faced a mob throwing bricks and petrol bombs.
警察面对一群投掷砖块和汽油弹的暴徒。

patrol v．出巡，巡逻 n．巡逻
例句：Please stay where you are, I will have a patrol car there in two minutes.
请您呆在原地，两分钟之内我派巡逻车过来。

gasoline n．汽油
例句：Americans used to like big cars, and gasoline used to be very cheap.
过去美国人喜欢大型轿车，那时汽油很便宜。

ignite v．点火，点燃，教起
例句：Her speech ignites the audience's cheer.
她的讲话激起了听众的喝彩。