An American company says it has developed the world's first true jet pack for personal flight.
一家美国公司声称开发出了全球第一个用于个人飞行的喷气背包。
And a New Zealand inventor recently invented a jet pack, which weighs about 250 pounds, that reportedly can run for 30 minutes.
最近，又有一位新西兰发明家发明了一种重约250磅的喷气式飞行背包，据称它可以飞30分钟。
The Martin jet pack is designed to conform to the Federal Aviation Administration's definition of an ultralight vehicle, which weighs less than 254 pounds and carries only one passenger.
马丁“喷气飞行器的设计符合了美国联邦航空管理局对超轻交通工具的定义。”超轻交通工具是指重量不到254磅，仅载一名乘客的交通工具。
As thousands looked on Tuesday, the inventor's 16-year-old son donned a helmet, fastened himself to a prototype Martin jet pack and revved the engine, which sounded like a motorcycle.
周二，在数千人注视下，发明家16岁的儿子戴上头盔，紧绑喷汽式背包，随着摩托似的引擎声响，马丁背包飞离地面三尺左右，巨大的引擎声让很多小孩都捂住耳朵。
As thousands looked on Tuesday, the inventor's 16-year-old son donned a helmet, fastened himself to a prototype Martin jet pack and revved the engine, which sounded like a motorcycle.
周二，在数千人注视下，发明家16岁的儿子戴上头盔，紧绑喷汽式背包，随着摩托似的引擎声响，马丁背包飞离地面三尺左右，巨大的引擎声让很多小孩都捂住耳朵。
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