Carburizing flame
[化] 碳化焰
🧩 词语组成解析
[机] 渗碳
🗣️ 情景例句
I think it's too easy.
我觉得它太简单了。
No one (or man) is born wise or learned.
人非生而知之者。
In much of China, spring is usually very short.
在中国的许多地方，春天通常很短。