Obama sat like a jazz musician on his chair, one heel hooked at an angle, while McCain sat as if he might leap up at any moment, or stood impatiently waiting for his turn to speak.
奥巴马勾起一只脚后跟，看上去像是一个爵士乐手；而麦凯恩则连坐着都好像是时刻准备着奋起作战的样子，如果他站着作答，表情上会看出有些不耐烦。
He also made the first pair of bifocal glasses and invented a musician instrument called the glass harmonica and a stepladder chair.
他还制造了世界上第一副双光眼镜，发明了一种叫玻璃琴的乐器和活动梯子。
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