Decarbonylation
脱羰作用
🗣️ 情景例句
That's why the new community center is a good idea.
这就是为什么说新的社区中心是个好主意。
A disease known is half cured.
病情确诊断，治病好一半。
'I find it beautiful,' I said.
“我觉得它好看，”我说，