Decarbonylation
脱羰作用
🗣️ 情景例句
ready for the graduation ceremony,
为毕业典礼做准备，
She's a beautiful girl, don't you think so?
她是美丽的女孩，你不觉得吗？
The time I spent at exercises gradually diminished.
我花在锻炼上的时间逐渐减少，