Dimetone
双甲酮, 二甲基环已二酮
🗣️ 情景例句
Part of the building for older people,
建筑物中的一部分给老年人用，
Had so much fun
玩得开心
How ever you may work hard, the boss will not be fully satisfied.
无论你有多努力，老板总不会完全满意。