bn:00027042n
Noun Concept
EN
difficulty
EN
A factor causing trouble in achieving a positive result or tending to produce a negative result WordNet 3.0
Definitions
Examples
Relations
Sources
EN
A factor causing trouble in achieving a positive result or tending to produce a negative result WordNet 3.0
EN
Serious difficulties were encountered in obtaining a pure reagent WordNet 3.0
WordNet 3.0