Backstep welding
[化] 分段退焊
🧩 词语组成解析
后退
a. 焊的\\n[机] 熔接, 焊接, 锻接
🗣️ 情景例句
I'm sorry, Mom.
我很难过， 妈妈。
Better be half hanged than ill wed.
与其成怨偶，不如守单身。
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。