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The play begins at 6:30 this evening.
When does the plane take off?
He leaves for that city next week.
According to the timetable, the express train to Shanghai starts at nine in the morning.
（按照时刻表，开往上海的特快列车早上 7 点出发。）
① adj. 公共的，公众的，社会的
在这个镇里有个公共图书馆There is a public library in this town.
② adj. 公开的，众人皆知的
他们的秘密会晤20年以后才被公开。Their secret meeting was made public 20 years later.
in public 公开的；in private 私下里的
让我们私下谈谈?Let’s have a conversation in private.
③ n. 公众，群众，大众
博物馆在周日对公众开放。The museum is open to the public on Sunday.
