fig. (of business, popularity etc) to suffer a sudden, devastating decline
to take a dive
Definitions (粵典–words.hk)
動詞
好短時間內就差咗好多 to suffer from a drastic decline; literally "to drop a thousand in one fall"
沙士期間,食肆生意一落千丈。
沙士期间,食肆生意一落千丈。
saa1 si2 kei4 gaan1, sik6 si3 saang1 ji3 jat1 lok6 cin1 zoeng6. During the breakout of SARS, restaurants earned a lot less.
Definitions (Wiktionary)
phrase, figuratively, idiomatic
to suffer a devastating decline; to decline drastically