His class also goes on an annual field trip to a theme park, where students learn how roller coasters are built.
他的课程还要每年到一个主题公园进行一次实地考察，在那里学生们能了解过山车是如何建造的。
His class also goes on an annual field trip to a theme park, where students learn how roller coasters are built.
他的课程还要每年到一个主题公园进行一次实地考察，在那里学生们能了解过山车是如何建造的。
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