Allylacetone
[有化]烯丙基丙酮
🗣️ 情景例句
Good for you.
我真为你高兴。
Friends are lost by calling often and calling seldom.
交往过密过疏，都会失去朋友。
As it is only six feet across, it is barely noticeable.
仅6英尺宽，很难被发现。