Preweld
焊接前, 烧焊前
🗣️ 情景例句
It hurts, doesn't it?
会痛 ，是不是？
Wit without learning is like a tree without fruit.
仅有机智而无真才实学，犹如一棵大树不结果。
We can't make up our minds.
我们还拿不定主意。