"最高"的英文读音是/ˈsaɪkəʊ/。
这个词来自古英语"sēo"，意思是"最好的"，后来逐渐演变成现在的"最高"。
例句：
The mountain is the highest peak in the range. (这座山是该山脉中最高的峰峰。)
She has the highest score in the class. (她是班里分数最高的。)
The company's profits reached their highest point last year. (这家公司的利润去年达到了最高峰。)