| 词汇 | opportunity |
| 词根词缀 | 词源： late 14c., from O.Fr. opportunite (13c.), from L. opportunitatem (nom. opportunitas) "fitness, suitableness, favorable time," from opportunus (see opportune). Opportunity cost attested from 1911. 词根记忆： n. 机会After a fortnight's torture, the unfortunate man got an opportunity to escape the misfortune.经过两星期的拷打后那个不幸的人得到了逃脱不幸的机会. |
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