“I can assure you that the scariest flights of my life were crossing the Andes,” a Chilean pilot told me, when I flew from Santiago to Mendoza. He’d been flying over the mountains for more than fifteen years, he said, sometimes in a four-person plane. The high peaks present a Scylla and Charybdis problem in winter, when the jet stream intensifies and storms roll in from the Pacific. Fly high and get tossed around by mountain waves. Fly low and get driven toward the rocks by the zonda wind. “It can throw down a small airplane,” he said.
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每到北京有類似重大政治相關事件發生時，進出北京的交通、物流都有影響。張女士回憶說，在自己念大一的時候，「兩會」前後，她所關注的網店店鋪會提前發布通告表示近期北京快遞「停運」、或者委婉表示發貨、物流或有延遲。。PDF资料对此有专业解读
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