Dimetone
双甲酮, 二甲基环已二酮
🗣️ 情景例句
Never know what?
说不定什么？
Her dress is behind the table.
她的衣服在桌子后面。
Before returning home at night.He took a shower and changed back into his suit.
晚上回家前，他洗个淋浴，重新换上那身黑色西服。