青云翻译

I found a good math book, not only its content is a choice, it's every evidence that even after each symbol is selected.

I found a good math books, not only its contents are selected, each proof of it or even each symbol is selected.

I discover a good mathematics book, not only its content has the choice, its each certificate each mark all is even the process choice.

I found a good mathematics books, it is not only the content, it is a choice of every proves that even every symbol have been selected.

I found a good math books, not only its contents are selected, each proof of it or even each symbol is selected.