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顶峰；极点；顶点
If someone reaches the pinnacle of their career or the pinnacle of a particular area of life, they are at the highest point of it.
例句
John Major has reached the pinnacle of British politics...
约翰·梅杰已攀上了英国政界的顶峰。
She was still a screen goddess at the pinnacle of her career.
她仍然是一位处于事业巅峰期的银幕女神。