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Ощутимый удар получили туристические и авиакомпании, которые понесли урон из-за закрытия воздушного пространства и приостановки рейсов на Ближний Восток. Акции Lufthansa снизились на 11 процентов, а IAG (владельца British Airways) и Air France KLM потеряли пять и семь процентов соответственно.
车企们正陷入追求速度的“囚徒困境”：对手快，自己只能更快；对手放低可靠性标准，自己也很难坚守——“囚徒困境”往往以双输/多输结尾。，更多细节参见新收录的资料
这些品牌在高端美妆消费市场中备受追捧，是雅诗兰黛押注未来的核心资产。如果市场上出现未经授权的低价产品流通，或将会对品牌的正规销售渠道产生影响。，详情可参考新收录的资料
status of the last command, reducing the number of escapes required.
Definition 4 (Definition: Fundamental Group) Let \(X\) be a topological space and \(x_0 \in X\) a basepoint. A loop based at \(x_0\) is a continuous map \(\gamma: [0,1] \to X\) with \(\gamma(0) = \gamma(1) = x_0\). Two loops \(\gamma, \delta\) are homotopic relative to \(x_0\) (written \(\gamma \simeq \delta\)) if there exists a continuous map \(H: [0,1] \times [0,1] \to X\) such that \[H(s,0) = \gamma(s), \quad H(s,1) = \delta(s), \quad H(0,t) = H(1,t) = x_0\] for all \(s,t \in [0,1]\). This is an equivalence relation; denote the equivalence class of \(\gamma\) by \([\gamma]\).。关于这个话题，新收录的资料提供了深入分析