天气状况打乱了航空公司的时刻表。
这就是为什么日常锻炼是如此重要,以至于美国国家航空航天局将其列入工作日程表中。
That's why exercise is considered so vital that National Aeronautics and Space Administration (NASA) puts it right on the workday schedule.
这些航空公司常常共用销售处和乘客休息室等设施以节省成本,还可以调整飞行时刻表,优化航运网络。
They often trim their costs by sharing facilities such as sales offices and passenger lounges. They can also coordinate their flight schedules, optimizing their networks.
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