tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
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在2024年又一次圍繞寵物友善政策的書面提問中，特區政府提供數據，顯示自2020年新冠病毒病（COVID-19）疫情以來，市民舉報狗隻進入餐廳數字，從2020年的58宗，增加至2024年的418宗。
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