四十年前,乘飞机可是一件新鲜事,是一个值得向朋友夸耀的冒险行动。可是,现在乘飞机已经变得和乘公共汽车差不多了。美国的航空公司每天大约有一百万乘客。空中飞行变得如此普遍的原因之一是由于电子导航系统的发展,这样飞机就可以在无线电电波发出的领航信号指挥下准确地从一个机场飞到另一个机场。这些尖端的科学设施已经变得非常普遍,因此美国英语里有一个表达形式,那就是: Right on the beam。Right on the beam在日常生活中的意思就是一个人做某件事做得很对。下面就是一个例子:
例句-1:"Your school report is right on the beam: you followed directions exactly and got all the facts down in the right order."
例句-2:"I thought Mr.Claghorn's speech was right on the beam last night! Just like he says, we need to spend more money on educating our children. He makes a lot of sense to me."
像电子导航系统这样现代化的安全设施在以前是根本没有的。在使用无线电电波,雷达和空中交通管制系统前,飞行员只能根据地面的铁路、河流和水塔那样的标记来决定他们的航向。要是一个飞行员不得不在云层里飞,或在气候不好的情况下飞行的话,那他只好靠自己的猜测来决定方向了。这在英语里就是: To fly by the seat of his pants。现在人们用To fly by the seat of his pants来形容某种局面,也就是你在做某件事的时候没有明确的指导,也缺乏足够的知识。下面这个例子就可以说明这个词汇在日常生活中的用法:
例句-3:"When Jones started up business in a new town, he didn't know anybody, so he had to fly by the seat of his pants."
例句-4:"Driving to a friend's house last night I took the wrong turn off the main highway and got lost. I didn't have a road map but I flew by the seat of my pants and after twenty minutes I found the street I was looking for."