[countable, usually singular] a period of time when the level, value or rate of sth is at its highest; the best or most successful point顶点；顶峰◆Inflation is believed to have reached its peak.人们认为通货膨胀已经达到最高点。◆She's at the peak of her career.她正处于事业的巅峰。◆Economic growth moves through a cycle of peaks and troughs.经济增长在高峰期和低谷期的循环中运行。 OPP trough  ➡  picture at business cycle ⨁an all-time / a record peak空前的／创纪录的高峰 ⨁ above / below the peak峰值以上／以下 ⨁ to be at / hit / reach / rise to a peak处于顶峰；达到顶峰