Hurdle Word 1 hintAn expression.
The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
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当越来越多「Agent」能够被像软件一样使用，AI 对工作方式的影响，才会真正开始外溢。
await scene.play(new Create(square));
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