Resulfurization
[冶]增硫, 回硫
🗣️ 情景例句
Where did you go to school?
你在哪儿上学？
That was a lousy movie.
那电影糟透了！
Now move the hand to and fro and around but not up and down.
然后把手前后左右以及旋转摆动，但不要上下摆动。