PICO 官宣新品：或为新款 VR 头显
Что думаешь? Оцени!
，这一点在旺商聊官方下载中也有详细论述
The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.，详情可参考搜狗输入法下载
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