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Jyutping hoi1 je2
Pinyin kāi yè

Definitions (粵典–words.hk)
  1. 動詞
    夜晚​嘅​時​候​做​嘢​,​特別​指​返工
    to work late into the night; to burn the midnight oil
    • 訂單太多,老闆話呢個禮拜都要開夜趕工喎!
      订单太多,老板话呢个礼拜都要开夜赶工㖞!
      There are too many orders to handle, so the boss said we all have to work late into the night this week.
Definitions (Kaifangcidian)
  1. 上夜班
  2. 加夜班

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Jyutping hoi1 je6
Pinyin kāi yè

Definitions (CC-CANTO)
  1. working into the night (spoken)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他老是开夜车。
    他老是開夜車。
    tā lǎo shi kāi yè chē 。
    • He always sits up late at night.
    • He's always burning the midnight oil.
Examples (Tatoeba—Cantonese-English)
  1. Cantonese
    佢成日都开夜车。
    佢成日都開夜車。
    keoi5 sing4 jat6 dou1 hoi1 je6 ce1 。
    • He always sits up late at night.
    • He's always burning the midnight oil.
Examples (粵典–words.hk)
  1. Cantonese
    听日就考试,但系之前冇温书,唯有而家开夜车。
    聽日就考試,但係之前冇温書,唯有而家開夜車。
    ting1 jat6 zau6 haau2 si5, daan6 hai6 zi1 cin4 mou5 wan1 syu1. wai4 jau5 ji4 gaa1 hoi1 je6 ce1.
    • Tomorrow is the exam, but I didn't revise before, so I need to burn the midnight oil to do my revision.
  2. Cantonese
    阿明临时临急先开夜车温习。
    阿明臨時臨急先開夜車温習。
    aa3 ming4 lam4 si4 lam4 gap1 sin1 hoi1 je6 ce1 wan1 zaap6
    • Ming studied overnight at the last minute.
  3. Cantonese
    订单太多,老板话呢个礼拜都要开夜赶工㖞!
    訂單太多,老闆話呢個禮拜都要開夜趕工喎!
    • There are too many orders to handle, so the boss said we all have to work late into the night this week.