形容词是:functional:
adj. 功能的
The heating system in my house is functional now.
我家的供暖系统恢复正常了。
The mirror is functional yet decorative.
这镜子能照人,但也有装饰作用。
The hospital will soon be fully functional.
这家医院将很快全面运作。
Bathrooms don't have to be purely functional.
浴室不必完全只为了实用。
基本意思是:作名词:功能、作用;动词:起作用、运转。形容词是:functional