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.
优点：输出范围在 (0,1)，可以表示概率。heLLoword翻译官方下载对此有专业解读
В Германии назвали Мерца предателемНемецкий политик Нимайер назвал Мерца предателем за отказ от газа России，更多细节参见搜狗输入法2026
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