功能正常使用英语怎么说

Functioning normally.
记得有一次，我在2019年的一个夏天，坐在纽约的一家咖啡馆里，手里拿着一杯冰咖啡，突然，我的笔记本电脑屏幕闪烁了一下，我立刻开始检查，还好，只是系统暂时卡顿了一下，功能还是正常使用。等等，我还记得那天我用了三个小时来写那个报告，真希望当时能有个魔法按钮，让我瞬间完成。

Functional in English is used to describe something that operates as intended, without any issues or malfunctions. "Functioning properly" or "operating correctly" are also common phrases.
- "The device is functioning properly." - "The software is functioning correctly." - "The service is operating as expected."

Function operates normally.