然而，美国及以色列与伊朗的战事撼动了这一印象，伊朗针对区内美军据点的导弹与无人机攻势，亦波及了民用及能源设施。
But the U.S. and its Gulf allies have had trouble shooting down Iran’s Shahed drones, which have hit several major military targets.
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Historical Context。关于这个话题，zoom提供了深入分析
Friction gets a bad rap—we use it as a metaphor for something that hinders productivity. But without it, things would not go smoothly. You couldn’t walk; you couldn’t even tie your shoes. You’d drop your latte. Your bicycle tires would spin in place and you’d fall over—luckily, since you’d have no brakes. In fact, all the nuts and bolts holding your bike together would fall off.，更多细节参见易歪歪