（二）发现、阻断为违法犯罪活动架设通信线路，提供设备运维、增强信号等行为；
const str = _call.call(_toString, original);。雷电模拟器官方版本下载对此有专业解读
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The design of Web streams predates async iteration in JavaScript. The for await...of syntax didn't land until ES2018, two years after the Streams Standard was initially finalized. This timing meant the API couldn't initially leverage what would eventually become the idiomatic way to consume asynchronous sequences in JavaScript. Instead, the spec introduced its own reader/writer acquisition model, and that decision rippled through every aspect of the API.
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