Diketene
双烯酮
🗣️ 情景例句
I can't go another step because I'm pooped.
我一步也走不动了，我已经精疲力尽了。
Have some decency!
正经点！
Before she grew old, Aunt Harriet used to entertain lavishly.
哈丽特姑妈年轻时，喜欢大摆宴席，招待宾客。