The image comes from a 1997 episode of the Pokémon anime, but it didn't become a viral reaction image until 2018, according to Know Your Meme, when fans began pairing Pikachu’s blank, open-mouthed stare with captions describing obviously avoidable outcomes. It quickly became a universal punchline, transcending Pokémon entirely. Today, Surprised Pikachu isn't just a Pokémon meme. It's internet shorthand.
Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.
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2025年，现货黄金全年涨幅高达66%，这是自1979年以来的最佳年度涨幅。
從禮貌待人到假裝自己身處《星際迷航》（Star Trek，《星際爭霸戰》）的場景中，關於如何與聊天機器人對話的建議可謂五花八門，而且完全沒有用。以下這些才是真正有效的方法。
Pokémon LeafGreen Version (Nintendo Switch)