但现实的情况是，有时你去上生物课，意识到自己意外带的是历史笔记本。
There will be times when you go to biology class (for instance) and realize that you've brought the history notebook by accident.
但现实的情况是，有时你去上生物课，意识到自己意外带的是历史笔记本。
There will be times when you go to biology class (for instance) and realize that you've brought the history notebook by accident.
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