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.
黎智英欺詐案上訴得直：定罪及刑罰被撤銷，出獄時間提前
。同城约会是该领域的重要参考
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"I retired as a captain," he insisted, "and a captain I will be."