Paroxypropiophenone
对羟基苯丙酮
🗣️ 情景例句
They don't have room service at Old Country Inn. Old Country Inn
没有房间服务部。
He likes playing ping-pong.
他喜欢去打乒乓球。
I go to bed at about 10:00.
我大概十点上床睡觉。