Câu ví dụ #1
1. Without an overpass at the section, people must take a detour about one kilometer away.
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2. Vietnam Airlines is operating six weekly flights between Vietnam and Europe, incurring increased costs of $70,000 to 130,000 per week while Bamboo Airways operates three flights to Europe a week and the detour costs it $35,000-65,000 a week.
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