en puzzle (n)
― Synonym ⟶
Weight: 1.0
zh 難題 Source: English Wiktionary
en problem (n)
― Synonym ⟶
Weight: 1.0
zh 難題 Source: English Wiktionary
zh 難題
― Synonym ⟶
Weight: 1.0
zh 难题 Source: CC-CEDICT 2017-10
zh 難題
― Synonym ⟶
Weight: 1.0
en difficult problem Source: CC-CEDICT 2017-10