学会一门外语不容易。

It is not easy to learn a foreign language.

Source: Tatoeba

Sentence Composition

1 学会 xuéhuì
  1. to learn; to master
  2. institute; learned society; (scholarly) association
2 一门 yīmén
  1. (dialectal) continuously; constantly
  2. (literary) a door
  3. (literary) a single source; a single origin
  4. (literary) a way; a means
  5. a cannon
  6. a door
  7. a family; a clan
  8. a kind; the same kind
  9. a single source; a single origin
  10. a skill
  11. a style; a faction; a denomination
  12. a subject of study
  13. a way; a means
  14. an event or occurrence
  15. continuously; constantly
  16. the same school or teacher
3 外语 wàiyǔ foreign language

classifier: 門
4 不容易 bùróngyì
  1. difficult; hard; troublesome
  2. having a hard time; having a tough time