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1.The time gun is a fascinating concept in science fiction.
时间枪是科幻小说中一个引人入胜的概念。
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2. In the movie, the protagonist used a time gun to travel back in time.
在电影中，主人公使用了时间枪回到过去。
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3. The time gun was a revolutionary tool for scientists, allowing them to study the past.
时间枪是科学家的一项革命性工具，使他们能够研究过去。