long vacation
柯林斯词典
1. N the long period of holiday in the summer during which universities, law courts, etc, are closed (大学放假，法院休庭等的)长暑假
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long vacation
剑桥词典
- the three months in the summer when college and university students do not have classes
（大学生的）暑期长假，暑假 返回 long vacation