qīng / chūn / qī / shí / shēn / tǐ / huì / zhú / jiàn / chū / xiàn / míng / xiǎn / de / dì / èr / xìng / zhēng

青春期时，身体会逐渐出现明显的第二性征。

During puberty, the body gradually develops noticeable secondary sexual characteristics.