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今天我们来看看@Lucky小琼子 提的话题：Travel English optimal time 最佳时间 I'm planning my Spring Festival vacation. What's the optimal time to buy a plane ticket? 我在准备我的春节旅游。什么时候买机票最好？ cheap flight tickets 便宜的机票 There is a rumor that the best time to buy cheap flight tickets is on Tuesday.
n. 飞行，航班
n. 奇思妙想，一段楼
