我在三天之後收到了回覆。

The reply came after three days.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
=3 三 Sān surname San
=3 三 sān
  1. three
  2. 3
4 天 tiān
  1. day
  2. sky
  3. heaven
5 之後 zhīhòu
  1. after; behind
  2. (at the beginning of a sentence) afterwards; since then
6 收到 shōudào to receive
=7 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=7 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=7 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=7 了 liào unofficial variant of 瞭 liào
8 回覆 huífù
  1. to reply (by letter, email etc)
  2. reply; answer