Acid ketone
[机] 酮酸
🧩 词语组成解析
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
I have just begun to learn and my serve isn't very good.
我刚刚开始学习，发球不太好。
One who can do everything can do nothing.
什么都能做，什么都不行。
He must, for example, perceive an egg as a simple single solid shape,
以鸟蛋为例，观赏者必须感觉到它是一个单一的实体形态，