首页讲解员：贞人宾
甲骨文“三十”是把三个“十”字放到一个字位中，再把下部相连，仍读作“三、十”两个音节。这种现象称为“合文”，甲骨文用合文表示几十、几百、几千、几万等数字。
The oracle bone script form for “三十(sān shí: thirty)”places three “十(shí: ten)”characters within one character and connects the lower parts, still pronounced as the two syllables “三(sān: three)” and “十”. This phenomenon is called“combined characters”. In oracle bone scripts, combined characters are used to represent numbers in the tens, hundreds, thousands, and ten thousands, etc. （文字翻译 张蕊 童林）