Ketones
n. 酮类（ketone的复数）
🗣️ 情景例句
I'll take it. But the price is a bit high. How about free wrapping?
我买了。但价格有点高，免费包装怎么样？
She looks blue.
她满面忧伤。
An earthquake comes like a thief in the night, without warning.
地震就像夜间的小偷，不打招呼就来了。