由於我以前見過他一次，所以我馬上就認出他了。

Since I had met him once before, I recognized him right away.

Source: Tatoeba

Sentence Composition

1 由於 yóuyú
  1. due to
  2. as a result of
  3. thanks to
  4. owing to
  5. since
  6. because
2 我 wǒ
  1. I
  2. me
  3. my
3 以前 yǐqián
  1. before
  2. formerly
  3. previous
  4. ago
=4 見 jiàn
  1. to see
  2. to meet
  3. to appear (to be sth)
  4. to interview
  5. opinion
  6. view
=4 見 xiàn
  1. to appear
  2. also written 现 xiàn
=5 過 Guō surname Guo
=5 過 guò
  1. to cross
  2. to go over
  3. to pass (time)
  4. to celebrate (a holiday)
  5. to live
  6. to get along
  7. excessively
  8. too-
=5 過 guo (experienced action marker)
6 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
7 一次 yīcì
  1. first
  2. first time
  3. once
  4. (math.) linear (of degree one)
8 所以 suǒyǐ
  1. therefore
  2. as a result
  3. so
  4. the reason why
9 我 wǒ
  1. I
  2. me
  3. my
10 馬上 mǎshàng
  1. at once
  2. right away
  3. immediately
  4. on horseback (i.e. by military force)
11 就 jiù
  1. (after a suppositional clause) in that case; then
  2. (after a clause of action) as soon as; immediately after
  3. (same as 就是 jiùshì) merely; nothing else but; simply; just; precisely; exactly
  4. only; as little as
  5. as much as; as many as
  6. to approach; to move towards
  7. to undertake; to engage in
  8. (often followed by 着 zhe) taking advantage of
  9. (of food) to go with
  10. with regard to; concerning
  11. (pattern: 就 jiù ... 也 yě ...) even if ... still ...
  12. (pattern: 不 bù ... 就 jiù ...) if not ... then must be ...
12 認出 rènchū
  1. recognition
  2. to recognize
13 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
=14 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=14 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 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 了 liǎo)
=14 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=14 了 liào unofficial variant of 瞭 liào