Acidization
酸化作用, 酸化过程
🗣️ 情景例句
I guess we must.
我想咱们是该开始了。
Your friend was here a week ago,wasn't he?
一个星期前，你的朋友曾在这里，是不是？
Centuries ago, the word beeline was made to describe this thin line of bees flying through the air.
几百年前，有人用beeline 这个词来描写蜜蜂在空中飞行的细窄路线。