Web streams use a locking model to prevent multiple consumers from interleaving reads. When you call getReader(), the stream becomes locked. While locked, nothing else can read from the stream directly, pipe it, or even cancel it – only the code that is actually holding the reader can.
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，这一点在快连下载安装中也有详细论述
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Crossbench peer Baroness Kidron told the BBC Sir Keir Starmer needed to "get on with it" rather than launching more consultations.