韓語很難學，但韓文學起來很快。

Korean is difficult to learn, but Hangul can be learned quickly.

Source: Tatoeba

Sentence Composition

1 韓語 Hányǔ Korean language (esp. in context of South Korea)
2 很 hěn
  1. very; quite
  2. (also, often used before an adjective without intensifying its meaning, i.e. as a meaningless syntactic element)
=3 難 nán
  1. difficult (to...)
  2. problem
  3. difficulty
  4. difficult
  5. not good
=3 難 nàn
  1. disaster
  2. distress
  3. to scold
4 學 xué
  1. to learn
  2. to study
  3. to imitate
  4. science
  5. -ology
5 但 dàn
  1. but; yet; however; still
  2. merely; only; just
6 韓文 Hánwén
  1. hangul, Korean phonetic alphabet
  2. Korean written language
7 學 xué
  1. to learn
  2. to study
  3. to imitate
  4. science
  5. -ology
=8 起來 qǐlai
  1. to stand up; to get up
  2. also pr. qǐlái
=8 起來 qilai
  1. (after a verb) indicating the beginning and continuation of an action or a state
  2. indicating an upward movement (e.g. after 站 zhàn)
  3. indicating completion
  4. (after a perception verb, e.g. 看 kàn) expressing preliminary judgment
  5. also pr. qǐlai
=8 起來 qǐlái
  1. placed after a verb to form a copular verb, expressing evaluation based on initial perception
  2. placed after a verb to indicate that the action has started
  3. to get up; to get out of bed
  4. to rise up; to get up
9 很 hěn
  1. very; quite
  2. (also, often used before an adjective without intensifying its meaning, i.e. as a meaningless syntactic element)
10 快 kuài
  1. rapid
  2. quick
  3. speed
  4. rate
  5. soon
  6. almost
  7. to make haste
  8. clever
  9. sharp (of knives or wits)
  10. forthright
  11. plainspoken
  12. gratified
  13. pleased
  14. pleasant