Sealing welding
[化] 封底焊
🧩 词语组成解析
[化] 封闭; 封闭处理\\n[医] 封闭, 封口(创伤)
a. 焊的\\n[机] 熔接, 焊接, 锻接
🗣️ 情景例句
How come you're not studying?
你为什么不学习？
The word once spoken can never be realled.
一言既出，驷马难追。
I have an exhibition in London this coming month.
下个月我在伦敦要举办一次画展。