zài / gǔ / dài / nán / zǐ / èr / shí / suì / shí / jǔ / xíng / jiā / guān / lǐ / biǎo / shì / yǐ / jīng / chéng / nián

在古代，男子二十岁时举行加冠礼，表示已经成年。

In ancient times, men held a coming-of-age ceremony at the age of twenty.