书籍的种类有限 Types of books limited ; Limited range of books ; limited types of books
书籍的种类
The types of books
以上为机器翻译结果，长、整句建议使用 人工翻译 。
虽然下面的两本书不属于上面所列书籍的种类，但是我认为这两本书都很有用处。
The following two books don't really fit the above categories, but I have found both of them useful and refer to them regularly.
youdao
我喜欢这些种类的书籍。
I love these types of books.
《牛津词典》
我爱读这些种类的书籍。
I love these type of books.
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