難naan4題tai4

English

1. difficult problem
2. difficulty; tough issue; challenge

粵語 — Cantonese

1. 好難解決嘅問題（量詞：個／條）

Examples

• 呢個係數學界嘅世紀難題，好多數學家用咗成世時間都解決唔到。

  This is a century-old problem in mathematics, which many mathematicians spent their whole lives on it but still could not solve it.

• 某啲難題可能會有幾個（唔同複雜度嘅）演算法解決到，又有啲難題係冇已知能夠有效率解決佢哋嘅演算法嘅。

  Tatoeba · Matthewyau1367 CC BY

• 他解決了難題。

  He solved the difficult problem.

  Tatoeba · verdastelo9604 CC BY

• 誰解決了這個難題？

  Who solved the hard problem?

  Tatoeba · Martha CC BY

• 我問了她一個難題。

  I asked her a difficult question.

  Tatoeba · Martha CC BY

• 他擅长解答数学难题。

  He is good at solving complicated mathematical problems.

  Tatoeba · tommyfang95 CC BY

• 他正在思考这个难题。

  He's thinking about this difficult problem.

  Tatoeba · katshi94 CC BY