我會在三天之內回覆。

I will answer within three days.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
=2 會 huì
  1. can; to have the skill; to know how to
  2. to be likely to; to be sure to
  3. to meet; to get together
  4. meeting; gathering
  5. (suffix) union; group; association
  6. (bound form) a moment (Taiwan pr. huǐ)
=2 會 kuài (bound form) to reckon accounts
=2 會 kuò only used in 會撮／会撮
3 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)
=4 三 Sān surname San
=4 三 sān
  1. three
  2. 3
5 天 tiān
  1. day
  2. sky
  3. heaven
6 之內 zhīnèi inside; within
7 回覆 huífù
  1. to reply (by letter, email etc)
  2. reply; answer