Desulphuration
除硫
🗣️ 情景例句
I beg your pardon? Oh, I see.
你说什么？ 噢， 我明白了。
One false step will make a great difference.
失之毫厘，谬以千里。
We waited and waited, but nothing happened.
我们等啊等啊，可情况没有变化。