这个主要设计与100多年前爱迪生取得专利的设计相比没什么变化。
The basic design changed little from that patented by Edison more than 100 years ago.
一个叫罗伯特·普拉斯的飞行员发明了滚轮行李箱,并且在1991年取得专利权。
A pilot named Robert Plath invented the wheeled suitcase, and patented it in 1991.
“你能取得太阳的专利权吗?”他问道。
Finally, it was Robert Plath, who was an airline pilot, who invented a new, wheeled suitcase, which he patented in 1991.
后来一个叫罗伯特·普拉斯的飞行员,发明了一种滚轮行李箱,并且在1991年取得专利权。
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