他写道：“书包是所有学生必须配备的。”
He wrote: 'a school bag is an essential item for all our students.
所有的学生都必须在学校修体育课。
必须马上把所有学生送回家，霍格·华兹恐怕得永远关闭了。
The students must be sent home. I'm afraid this is the end of Hogwarts.
所有的学生必须都要证明自己能负担的了每年的学费。
All students must prove that they will have support for each year of study.
所有留学生在学期间必须有团体综合保险。
All foreign students must have comprehensive insurance coverage during the time of their study.
所有留学生在学期间必须有团体综合保险。
All foreign students must have comprehensive insurance coverage during the time of their study.
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