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Jyutping gam1 fei1 sik1 bei2
Pinyin jīn fēi xí bǐ

Definitions (Wiktionary)
  1. phrase, idiomatic
    the present cannot compare with the past; times have changed
    (syn.) 今時唔同往日, 今时唔同往日

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Jyutping gam1 fei1 sik1 bei2
Pinyin jīn fēi xī bǐ

Definitions (CC-CEDICT)
  1. things are very different now (idiom)
  2. times have changed
Definitions (粵典–words.hk)
  1. 語句
    而​家​嘅​情​況​比起​過去​差​咗​,​今時​唔​同​往日
    something is not what it used to be compared to before; things have changed over time
    • 自從海嘯,呢個城市今非昔比。
      自从海啸,呢个城市今非昔比。
      zi6 cung4 hoi2 siu6, ni1 go3 sing4 si5 gam1 fei1 sik1 bei2.
      The city can't recover to what it is like before after the tsunami.
Definitions (Wiktionary)
  1. phrase, idiomatic
    the present cannot compare with the past; times have changed
    (syn.) 今時唔同往日, 今时唔同往日
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    香港嘅物价飞涨,今非昔比。
    香港嘅物價飛漲,今非昔比。
    hoeng1 gong2 ge3 mat6 gaa3 fei1 zoeng3, gam1 fei1 sik1 bei2.
    • The cost of living in HK is getting much higher and higher than before.
  2. Cantonese
    今非昔比
    今非昔比
    gam1 fei1 sik1 bei2
    • things have changed over time
  3. Cantonese
    自从海啸,呢个城市今非昔比。
    自從海嘯,呢個城市今非昔比。
    zi6 cung4 hoi2 siu6, ni1 go3 sing4 si5 gam1 fei1 sik1 bei2.
    • The city can't recover to what it is like before after the tsunami.
Examples (Wiktionary)
  1. Mandarin
    今非昔比
    今非昔比
    jīn fēi xī bǐ
    • to no longer be what one was before (literally, “the present cannot compare with the past”)