🗣️ 情景例句
She said if I come by,
她说，如果我去一趟，
I said, Do you want me to help you?
我是说:你要我帮忙吗？"
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。