This is the 1678th most frequent Chinese word.
高速
High speed.
In this sentence, 高速 means 'highway', referring to the physical road infrastructure allowing high-speed travel.
高速公路是连接城市的重要交通工具。
Highways are important transportation means connecting cities.
Here, 高速 is used metaphorically to describe rapid work efficiency or productivity.
他的工作效率非常高速，总是能准时完成。
His work efficiency is very high-speed, he always finishes on time.
In this context, 高速 refers to the high speed or rapid execution performance of the computer.