Dimetone
双甲酮, 二甲基环已二酮
🗣️ 情景例句
Tomorrow night.
明天晚上。
If a donkey bray at you, don't bray at him.
傻瓜惹著你，你别跟他缠。
Would you be kind enough to sign our visitors book?
请在来宾簿上签名好吗？