難題
B1
Level 5
★ Core word
Noun
Definition
- difficult problem
Stroke order
Tap a character to replay.
Example
這是一個很難解決的難題。
This is a difficult problem to solve.
Related words at this level
Vocabulary & levels: TBCL / NAER. Parts of speech: TOCFL 8000-word list (SC-TOP). Definitions: CC-CEDICT & CFDICT (CC BY-SA). Stroke data: Make Me a Hanzi (Arphic Public License).