| 单词 | 积极因素 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔necessity〕As necessity is the mother of invention, I decided to explore ways in which I could turn this negative into a positive.既然有需要就有创造, 我决定要寻求方法将这种消极因素化为积极因素。外研社新世纪 |
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