快速

快速 (kuài sù) means 'quickly' or 'rapidly' in English. It describes the speed at which something happens, emphasizing efficiency and swiftness.

The character 快 (kuài) originally meant 'happy' but evolved to signify speed or quickness. 速 (sù) directly relates to 'speed' or 'haste.' Together, they convey a sense of rapid action or movement.

快速 is commonly used in daily conversations to describe actions like running, speaking, or completing tasks. It's also used in technology and business contexts to emphasize efficiency. In Chinese culture, speed is often valued, especially in modern, fast-paced environments.