[in sing.]the point at which someone or something is best, perfect, or most successful 顶峰,顶端,极致 physics is the acme of scientific knowledge. 物理学是科学知识的顶峰。
语源
late 16th cent.: from Greek akmē 'highest point'. Until the 18th cent. it was often consciously used as a Greek word and often written in Greek letters