Japanese readers can u help me understand this:pic.twitter.com/4NvDpf9Wse
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First 2 Kanji are for "Ticket Gate" and the second 2 are for "induction" So my first guess would be it's a chime for when you're allowed to enter the ticket gate
google's picture translation in the app is nice for this sort of thing not the real time mode, but the one where you take a picture and highlight the specific sections with words you want to translate, it's easier to parse word by word that way
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