By functional group I mean an alcohol group or ketone group or aldehyde group or acid group.

当我提到官能团时，指的是醇基、酮基、醛基或羧基。

Beta hydroxybutyric acid on the other hand, even though it's still one of the ketone bodies, isn't technically a ketoacid since its ketone group has been reduced to a hydroxyl group.

而β-羟基是酮体，但却不是酮，因为它的酮基团被还原成了羟基。

Acetone has a ketone group and it's called 'acetone' because it was derived from acetic acid, which is vinegar, the most common carboxylic acid in your kitchen.

丙酮具有一个酮基，它被称为“丙酮”是因为它是从醋中衍生出来的，而醋就是厨房中最常见的羧，就是食醋。

After that happens, the liver turns the fatty acids into ketone bodies, like acetoacetic acid and beta hydroxybutyric acid; acetoacetic acid is a ketoacid because it has a ketone group and a carboxylic acid group.

此后，肝把脂肪转化成酮体，比如乙酰乙、β-羟基；乙酰乙是一种酮，因为它有酮基团和羧基团。