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市集一角，“云游”北京中轴线结束，沙特女孩瓦阿德·哈尔比摘下VR（虚拟现实）设备后意犹未尽：“我乘坐马车在紫禁城里游览，‘飞上’屋脊看到神兽，听到暮鼓晨钟，俯瞰中轴线夜景。这种身临其境般的‘旅游’让我感受到中国文化的厚重历史和魅力，激起我去中国旅游的浓厚兴趣。”，更多细节参见51吃瓜
。夫子对此有专业解读
"Quite a difference," notes van Mulligen.
What TransformStreams are supposed to do is check for backpressure on the controller and use promises to communicate that back to the writer:，详情可参考91视频