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Jyutping zam3 haam4 seoi2
Pinyin jìn xián shuǐ

Definitions (CC-CANTO)
  1. (verb) to soak in salty water (slang) saying someone studies abroad
Definitions (粵典–words.hk)
  1. 動詞
    去​外國​生活​或者​留學​;​因為​去​嘅​地方​通常​隔​咗​個​海​,​所以​叫​浸​鹹​水
    to study or to live abroad, literally stands for dipping in salty water
    • 佢喺外國浸咗咁耐鹹水,啲英文實好叻。
      佢喺外国浸咗咁耐咸水,啲英文实好叻。
      keoi5 hai2 ngoi6 gwok3 zam3 zo2 gam3 noi6 haam4 seoi2, di1 jing1 man2 sat6 hou2 lek1.
      His English must be excellent after studying abroad for so many years.
Definitions (Wiktionary)
  1. verb, Cantonese, verb-object
    to study abroad
Definitions (Kaifangcidian)
  1. 留學 – 留学
  2. 出國留學 – 出国留学
Examples (粵典–words.hk)
  1. Cantonese
    浸咸水
    浸鹹水
    zam3 haam4 seoi2
    • to study overseas; literally, to soak in salt water