ㄌㄤˇlǎngㄌㄤˇlǎngㄕㄤˋshàngㄎㄡˇkǒu

  1. 誦讀熟練順口出來唐朝詩人白居易作品淺顯易懂當時老人小孩大多朗朗上口。」

to flow right off the tongue (of lyrics or poetry)​, to recite with ease, catchy (of a song)​