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意思解释：（Black mouth）线装书书口一种格式。版口中心上下端所刻的线条，粗阔的叫大黑口，细狭的叫小黑口。
线装书书口的一种格式，版口中心上下端所刻的线条，粗阔的叫大黑口，细狭的叫小黑口(区别于“白口”)。…
A kind of format of mouth of thread-bound book book, edition mouth center carries cuts line up and down, of thick broadness call big black mouth, of fine narrow call small black mouth (distinction at white mouth ) . ...
黑组词、口组词、 旧志、延眷、枚举、丹局、异备、打账、郊饯、页心、识曲、迷恋、宅气、士乡、贾利、填咽、饭庄、抱忿、穷漂、觞歌、迁易、黑口、