接下来，你需要头盔。如果你的小孩能够支撑起自己的头，他们也能戴一副用于骑车的头盔。
Next, you need helmets. If your child can hold up their head, they can probably wear a helmet just fine and are ready for riding.
如果你的小孩能够支撑起自己的头，他们也能戴一副用于骑车的头盔。
If your child can hold up their head, they can probably wear a helmet just fine and are ready for riding.
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。
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.
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