(pos:動詞)
<explanation>
yue: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
eng:to count down, usually in anticipation of an event
<eg>
yue: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.)
eng:May we invite our guests to cut the ribbon after my countdown from three.
<eg>
yue: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.)
eng:I will count down from 3. You better get up before I say the third word.
----
<explanation>
yue:數住距離重要日子仲有幾耐時間，多數以日計算
eng:to count down to special occasions or important dates, usually in terms of days
<eg>
yue:世界盃倒數一百日 (sai3 gaai3 bui1 dou3 sou2 jat1 baak3 jat6)
eng:100 days to go until the World Cup
<eg>
yue:我倒數緊佢返嚟嘅日子。 (ngo5 dou3 sou2 gan2 keoi5 faan1 lei4 ge3 jat6 zi2.)
eng:I'm counting down the days until he comes back.
----
<explanation>
yue: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
eng:to attend countdown celebrations on the eve of special occasions
<eg>
yue:你平安夜有冇去倒數？ (nei5 ping4 on1 je6 jau5 mou5 heoi3 dou3 sou2?)
eng:Did you go to the countdown on the Christmas Eve?
<eg>
yue:新年就快到，我哋一齊倒數咯。 (san1 nin4 zau6 faai3 dou3, ngo5 dei6 jat1 cai4 dou3 sou2 lo3.)
eng:The New Year is almost here, let's count down together.

(pos:區別詞)
<explanation>
yue:由最尾數返去最頭；逆次序數
eng:to count from the last; to count in descending or reversed order
<eg>
yue:倒數第二行 (dou3 sou2 dai6 ji6 hong4)
eng:the second line from the bottom
<eg>
yue:細佬今次考全班倒數第三。 (sai3 lou2 gam1 ci3 haau2 cyun4 baan1 dou3 sou2 dai6 saam1.)
eng:My brother ranks third-last in class.

(pos:名詞)
<explanation>
yue: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）
eng:(math.) reciprocal
<eg>
yue:正整數越大，倒數越細；負整數越大，倒數越大。 (zing3 zing2 sou3 jyut6 daai6, dou2 sou3 jyut6 sai3, fu6 zing2 sou3 jyut6 daai6, dou2 sou3 jyut6 daai6.)
eng:The greater a positive integer is, the smaller its reciprocal is; the greater a negative integer is, the greater its reciprocal is.