在这个过程中，性能优化和用户体验是两个不可忽视的关键因素。
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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.
Correction: This article was amended to remove a suggestion that Canada is not part of Nato.
Великобритания собралась защитить свою военную базу от Ирана14:46