Acetylacetate
[机] 乙酰醋酸盐
🗣️ 情景例句
Oh, Robbie!
哦 Robbie！
No. I've been visiting relatives.
没有，我走亲戚去了。
I have just received a letter from my old school, informing me that my former headmaster,
我刚刚收到母校的一封信，通知我说以前的校长