截至目前，美国方面尚未对该事件作出正式回应，伊拉克政府也未发布相关声明，有分析认为，这架无人机可能因导航故障或技术问题自行坠毁，而非被击落。
Worse, the question that they are trying answer is rarely stated clearly and concisely.
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Having large sections of the crowd looking at their phones, not at the action on the pitch, could undermine that. There's a balance to be struck, he says.
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