Hexenone
己烯酮
🗣️ 情景例句
What's the best way to learn English?
学习英语最好的方法是什么？
Half the world knows not how the other half lives.
富人不知穷人苦。
I was having dinner at a restaurant when Tony Steele came in.
我正在一家饭馆吃饭，托尼。斯蒂尔走了进来。