每一学年必备的书——其中的某些被认为是组成一个巫师的标准藏书所必不可少的书籍。
Required books for each year - some of these books make up what might be considered to be a standard library for any witch or wizard.
youdao
我的藏书比她的少好几倍。
My library is many times smaller than hers.
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