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Jyutping naan4 dang1 daai6 ngaa5 zi1 tong4
Pinyin nán dēng dà yǎ zhī táng

Definitions (粵典–words.hk)
  1. 動詞
    充撐​唔​到​大場面​;​指一樣​嘢​唔​夠好​,​唔​夠格調​擺​係​高級​、​正式​嘅​場​合​,​喺​有​識​見​嘅​人​面前​會​失禮
    to describe something as too unrefined to be placed in an elegant occasion
    • 呢個菜式好食就好食嘞,但賣相就難登大雅之堂。
      呢个菜式好食就好食嘞,但卖相就难登大雅之堂。
      ni1 go3 coi3 sik1 hou2 sik6 zau6 hou2 sik6 laak3, daan6 maai6 soeng3 zau6 naan4 dang1 daai6 ngaa5 zi1 tong4.
      This dish is delicious in terms of taste, but for (its) presentation, it is too indelicate for a high-end place.
Examples (粵典–words.hk)
  1. Cantonese
    呢个菜式好食就好食嘞,但卖相就难登大雅之堂。
    呢個菜式好食就好食嘞,但賣相就難登大雅之堂。
    ni1 go3 coi3 sik1 hou2 sik6 zau6 hou2 sik6 laak3, daan6 maai6 soeng3 zau6 naan4 dang1 daai6 ngaa5 zi1 tong4.
    • This dish is delicious in terms of taste, but for (its) presentation, it is too indelicate for a high-end place.