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Jyutping jat1 sam1 ji6 jung6
Pinyin yī xīn èr yòng

Definitions (CC-CEDICT)
  1. to do two things at once (idiom)
  2. to multitask
  3. to divide one's attention
Definitions (粵典–words.hk)
  1. 動詞
    同時間​處理​兩件​事
    to do two things at the same time; to divide one's attention; to multitask
Definitions (Wiktionary)
  1. phrase, idiomatic
    to divide one's attention; to multitask
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    我不能一心二用。
    我不能一心二用。
    wǒ bù néng yī xīn èr yòng 。
    • I can't do two things at a time.
    • I can't do two things at once.
  2. Mandarin
    你不能一心二用。
    你不能一心二用。
    nǐ bù néng yī xīn èr yòng 。
    • You can't do two things at once.
Examples (粵典–words.hk)
  1. Cantonese
    一心二用
    一心二用
    jat1 sam1 ji6 jung6
    • to multitask