ˋㄓㄥˋㄑㄧㄤㄩㄢˊzìzhèng‑qiāngyuán

字正腔圆
  1. 形容說話咬字精準發音正確腔調圓潤 主持人說話字正腔圓悅耳」。

(of singing or speaking)​ very articulate pronunciation and vocalizing