die-hard['daihɑ:d]：n.死硬派，顽固分子

6 We'll have personal helicopters.

私人直升机普及

Forget jetpacks and flying cars. Popular Mechanics was pretty sure back in 1951 that every family in 21st century would have at least one helicopter in their garage.

忘掉喷气背包和飞车吧。《大众机械》在1951年非常确定21世纪每个家庭的车库里至少会有一架直升飞机。

"This simple, practical, foolproof personal helicopter coupe is big enough to carry two people and small enough to land on your lawn," they explained. "It has no carburetor to ice up, no ignition system to fall apart or misfire: instead, quiet, efficient ramjets keep the rotors moving, burning any kind of fuel from dime-a-gallon stove oil or kerosene up to aviation gasoline." Yes, but then, we'd imagine, your teenage son would ask to borrow the chopper, and you'd wake up the next day to discover your helicopter stuck in a tree. It's always something!

他们解释说：“这款简单、实用、使用简便的私人直升机轿跑车足够大，可以搭载两个人，也足够小，可以停在自家草坪上。它的化油器不会结冰，没有会散架或打不着火的点火系统：相反，安静、高效的冲压发动机使旋翼保持转动，燃烧从每加仑10美分的炉用油或煤油到航空汽油的任何燃料。”是的，但是，我们可以想象，你十几岁的儿子会向你借直升机，而你第二天醒来发现你的直升机卡在树上了。想想吧！

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