开本 開本

    kāiběn

    1. Nounbook format based on how a full printing sheet is cut or folded (often abbreviated to 开 kāi after a numeral, e.g. 16-kai and 32-kai, roughly A4 and A5 respectively)

    这本书的开本是16开,看起来很舒服。Zhè běn shū de kāiběn shì 16 kāi, kànqǐlai hěn shūfu.This book is in 16-kai format, which looks very comfortable.