Last Updated
：2025/12/02
backwards time machine
（ plural ）
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(science fiction) A time machine that can only allow travel to the past, but cannot also allow travel to the future.
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backwards time machine
When the scientist switched on the backwards time machine, she could only revisit moments she'd already lived.
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When the scientist switched on the backwards time machine, she could only revisit moments she'd already lived.
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