更深层次的带动，实际上在于城市建设的提速、体育赛事上下游产业的发展。特别是对于目前处于发展转折点、关键期的沣东而言，将倒逼西安国际足球中心周边建设的加速，包括商业、酒店、交通等配套的完善，以及城市绿化的提升。
Владислав Уткин
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async function squareToCircle(scene: Scene) {
# Create with a custom label
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.