| 正面 | 1694.difficulty 英 ['dɪfɪk(ə)ltɪ]美 ['dɪfɪkəlti]     |
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| 背面 |     释义： 1. 出去的东西当然是支出 => expense, 那么返回来的东西理所当然的就是收入了 => revenue.2. income <===> revenue, 构词成分及原理差不多，含义当然也差不多，很相近。3. expense <===> revenue.4. expense <===> income.5. 由于re-的“back”含义，所以该词多指带有投资出去后然后所得到的回报性的收益。如 (公司、组织或政府的) 收入，国家的税收。n. 困难，困境 例句： 1. He was going red in the face and breathing with difficulty.他涨红了脸，费力地喘着气。 difficulty (n.)late 14c., from Old French difficulté, from Latin difficultatem (nominative difficultas) "difficulty, distress, poverty," from difficilis "hard," from dis- "not, away from" (see dis-) + facilis "easy" (see facile)." |