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Jyutping dou2 sou3
Pinyin dào shǔ

Definitions (粵典–words.hk)
  1. 名詞
    將​1​除以​一個​唔​等​於​0​嘅​數​,​得出​嘅​商​就​係​被​除​數​嘅​倒​數​(​量​詞​:​個​)
    (math.) reciprocal
    • 正整數越大,倒數越細;負整數越大,倒數越大。
      正整数越大,倒数越细;负整数越大,倒数越大。
      zing3 zing2 sou3 jyut6 daai6, dou2 sou3 jyut6 sai3; fu6 zing2 sou3 jyut6 daai6, dou2 sou3 jyut6 daai6.
      The greater a positive integer is, the smaller its reciprocal is; the greater a negative integer is, the greater its reciprocal is.

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Jyutping dou3 sou2
Pinyin dào shǔ

Definitions (粵典–words.hk)
  1. 區別詞
    由​最尾數​返去​最頭​;​逆​次序​數
    to count from the last; to count in descending or reversed order
    • 倒數第二行
      倒数第二行
      dou3 sou2 dai6 ji6 hong4
      the second line from the bottom
    • 細佬今次考全班倒數第三。
      细佬今次考全班倒数第三。
      sai3 lou2 gam1 ci3 haau2 cyun4 baan1 dou3 sou2 dai6 saam1.
      My brother ranks third-last in class.
  2. 動詞
    由​大​嘅​數​字​開​始​倒​轉​數​返​去​零​,​預告​一件​事發生​,​或​等​人​有所​準備
    to count down, usually in anticipation of an event
    • 請各位嘉賓喺我倒數三聲之後一齊剪綵。
      请各位嘉宾喺我倒数三声之后一齐剪彩。
      cing2 gok3 wai2 gaa1 ban1 hai2 ngo5 dou3 sou2 saam1 seng1 zi1 hau6 jat1 cai4 zin2 coi2.
      May we invite our guests to cut the ribbon after my countdown from three.
    • 我而家倒數三聲,三聲之內你好即刻起身。
      我而家倒数三声,三声之内你好即刻起身。
      ngo5 ji4 gaa1 dou3 sou2 saam1 seng1, saam1 seng1 zi1 noi6 nei5 hou2 zik1 haak1 hei2 san1.
      I will count down from 3. You better get up before I say the third word.
  3. 動詞
    數住​距離​重要​日子​仲有​幾耐​時間​,​多數​以日​計算
    to count down to special occasions or important dates, usually in terms of days
    • 世界盃倒數一百日
      世界杯倒数一百日
      sai3 gaai3 bui1 dou3 sou2 jat1 baak3 jat6
      100 days to go until the World Cup
    • 我倒數緊佢返嚟嘅日子。
      我倒数紧佢返嚟嘅日子。
      ngo5 dou3 sou2 gan2 keoi5 faan1 lei4 ge3 jat6 zi2.
      I'm counting down the days until he comes back.
  4. 動詞
    喺​節​日​前夕​參加​聚會​或慶祝​派​對​,​通常​包括​半夜​前十幾秒​開始​逐秒​倒​數到​半夜​,​迎接​節​日​嘅​來​臨
    to attend countdown celebrations on the eve of special occasions
    • 你平安夜有冇去倒數?
      你平安夜有冇去倒数?
      nei5 ping4 on1 je6 jau5 mou5 heoi3 dou3 sou2?
      Did you go to the countdown on the Christmas Eve?
    • 新年就快到,我哋一齊倒數咯。
      新年就快到,我哋一齐倒数咯。
      san1 nin4 zau6 faai3 dou3, ngo5 dei6 jat1 cai4 dou3 sou2 lo3.
      The New Year is almost here, let's count down together.
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

[-]

Jyutping dou3 sou3
Pinyin dào shù

Definitions (CC-CEDICT)
  1. inverse number
  2. reciprocal (math.)
Definitions (Wiktionary)
  1. noun
    reciprocal; inverse

[-]

Jyutping dou3 sou3
Pinyin dào shǔ

Definitions (CC-CEDICT)
  1. to count backwards (from 10 down to 0)
  2. to count down
  3. from the bottom (lines on a page)
  4. from the back (rows of seats)
Definitions (Wiktionary)
  1. verb
    to count backwards; to rank last
  2. verb
    to count down
  3. verb, Taiwanese-Hokkien
    to not repay a debt
    (syn.) 倒債, 倒债
  4. noun, Taiwanese-Hokkien
    bad debt
    (syn.) 呆賬, 呆账, 倒賬, 倒账
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #783
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    从10倒数到0。
    從10倒數到0。
    cóng 10 dào shǔ dào 0。
    • Count from 10 down to zero.
  2. Mandarin
    他是倒数第三个到的。
    他是倒數第三個到的。
    tā shì dào shǔ dì sān gè dào de 。
    • He was the last but two to arrive.
  3. Mandarin
    我是倒数第二个得知这个坏消息的。
    我是倒數第二個得知這個壞消息的。
    wǒ shì dào shǔ dì èr gè dé zhī zhè ge huài xiāo xi de 。
    • I was the second to last person to hear the bad news.
  4. Mandarin
    她总是在班上拿倒数第一。
    她總是在班上拿倒數第一。
    tā zǒng shì zài bān shàng ná dào shǔ dì yī 。
    • She is always at the bottom of the class.
Examples (粵典–words.hk)
  1. Cantonese
    倒数第二行
    倒數第二行
    dou3 sou2 dai6 ji6 hong4
    • the second line from the bottom
  2. Cantonese
    细佬今次考全班倒数第三。
    細佬今次考全班倒數第三。
    sai3 lou2 gam1 ci3 haau2 cyun4 baan1 dou3 sou2 dai6 saam1.
    • My brother ranks third-last in class.
  3. Cantonese
    请各位嘉宾喺我倒数三声之后一齐剪彩。
    請各位嘉賓喺我倒數三聲之後一齊剪綵。
    cing2 gok3 wai2 gaa1 ban1 hai2 ngo5 dou3 sou2 saam1 seng1 zi1 hau6 jat1 cai4 zin2 coi2.
    • May we invite our guests to cut the ribbon after my countdown from three.
  4. Cantonese
    我而家倒数三声,三声之内你好即刻起身。
    我而家倒數三聲,三聲之內你好即刻起身。
    ngo5 ji4 gaa1 dou3 sou2 saam1 seng1, saam1 seng1 zi1 noi6 nei5 hou2 zik1 haak1 hei2 san1.
    • I will count down from 3. You better get up before I say the third word.
  5. Cantonese
    世界杯倒数一百日
    世界盃倒數一百日
    sai3 gaai3 bui1 dou3 sou2 jat1 baak3 jat6
    • 100 days to go until the World Cup