Piperylone
[化] 哌立酮; 哌吡唑酮
🗣️ 情景例句
Are they always that difficult to make?
领结这样难打吗？
Fortune knocks once at least at every man's door.
人人都有鸿运高照之日。
Oh dear! It's very cold today, isn't it?
天哪，天真冷，不是吗？