Bo Xu, Yong Xu, Jiaqing Liang, Chenhao Xie, Bin Liang, Wanyun Cui, and Yanghua Xiao. CN-DBpedia: A Never-Ending Chinese Knowledge Extraction System. In International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems, pp. 428-438. Springer, Cham, 2017.
| 中文名 | 困难, 难点 | |
| 外文名称 | difficulty | |
| 词性 | 名词 | |
| 音标为 | K.K.['dɪfə,kʌltɪ] | 
| 标签 | 字词 |