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Jyutping bat1 dung2
Pinyin bù dǒng

Definitions (Wiktionary)
  1. verb
    to not understand
    • 不懂浪漫
      不懂浪漫
      bù dǒng làng màn
      to not understand romance; to be unromantic
  2. verb, as a verbal complement
    unable to comprehend (when seeing, hearing, etc.); cannot
    • 看不懂
      看不懂
      kàn bù dǒng
      can't read (and understand); can't understand (what's written)
    • 聽不懂
      听不懂
      tīng bù dǒng
      can't understand (what's being said)

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Jyutping bat1 dung2
Pinyin bu4dǒng

Definitions (CC-CANTO)
  1. to not know; to not understand; to be ignorant of [written]
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    你不懂的词做个记号。
    你不懂的詞做個記號。
    nǐ bù dǒng de cí zuò gè jì hao 。
    • Mark the words that you cannot understand.
  2. Mandarin
    我不知道这个城市,而且我一点都不懂那里的语言。
    我不知道這個城市,而且我一點都不懂那裏的語言。
    wǒ bù zhī dào zhè ge chéng shì , ér qiě wǒ yī diǎn dōu bù dǒng nà li de yǔ yán 。
    • I didn't know the city, and what's more, I couldn't speak a word of the language.
    • I'd never been to that city before, and even worse, I couldn't speak a word of the language.
  3. Mandarin
    我太愚蠢了...我竟然试着给你解释我自己都不懂的东西。
    我太愚蠢了...我竟然試着給你解釋我自己都不懂的東西。
    wǒ tài yú chǔn le ... wǒ jìng rán shì zhe gěi nǐ jiě shì wǒ zì jǐ dōu bù dǒng de dōng xī 。
    • I'm so dumb... I'm trying to explain things to you that I don't understand myself.
    • I was a fool to have tried explaining something to you that I don't understand myself.
  4. Mandarin
    我看不懂法语。
    我看不懂法語。
    wǒ kàn bu dǒng fǎ yǔ 。
    • I cannot read French.
    • I can't read French.
  5. Mandarin
    我听不懂她在说甚么。
    我聽不懂她在說甚麼。
    wǒ tīng bu dǒng tā zài shuō shèn me 。
    • I can't make out what she is saying.
Examples (Wiktionary)
  1. Mandarin
    你这暑假准备干什么?我不懂。
    你這暑假準備幹什麼?我不懂。
    nǐ zhè shǔ jià zhǔn bèi gàn shén me ? wǒ bù dǒng .
    • What are you doing this summer? I don't know.
  2. Mandarin
    我看不懂这个简体字。
    我看不懂這個簡體字。
    wǒ kàn bù dǒng zhè ge jiǎn tǐ zì .
    • I don't know this simplified character.
  3. Mandarin
    我不懂所有这些是什么目的。
    我不懂所有這些是什麼目的。
    wǒ bù dǒng suǒ yǒu zhè xiē shì shén me mù dì .
    • I don't get the point of all this.
  4. Mandarin
    不懂浪漫
    不懂浪漫
    bù dǒng làng màn
    • to not understand romance; to be unromantic
  5. Mandarin
    看不懂
    看不懂
    kàn bù dǒng
    • can't read (and understand); can't understand (what's written)