Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
Like what?
什么？
To blow up the mountain
吹走那座山
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和机械工业相比，化学工业中偶然发现的机会要多得多。