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
I was left with nothing.
我一点儿不剩了。
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
History does not relate whether his friend accepted his medical help, but in all probability he did.
他的朋友是否接受了他的药物治疗，历史没有记载，但很可能是接受了。