interleave
v[Tn, Tn.pr]
~ B (between A)/~ A (with B) insert (extra pages, usu blank ones) between the pages of a book 在书页间加(页, 通常为空白页)
The exercise book has plain pages interleaved between its lined ones/has lined pages interleaved with plain ones. 横格练习簿的页间已插入空白页.