Butenolide
[化] 丁烯羟酸内酯\\n[医] 丁稀酸内脂(一种霉菌毒素)
🗣️ 情景例句
I've been thinking about it for weeks now.
为这事我想了几个星期。
We've only sold our product at trade fairs, not in an on-going sales campaign.
我们的产品只在商展时展售，而没有办促销活动。
It certainly didn't arrive here that way.
送到这儿时可不是那样！