Macroconcentration
常量浓度
🗣️ 情景例句
Camping out is such great fun.
露营是件非常好玩的事。
I left very early last night, but I wish I hadn't left so early.
我昨晚离开得非常早，但我希望我没有离开那么早。[大学英语六级]
Officials from Greenwich Observatory have the clock checked twice a day.
格林尼治天文台的官员们每天两次派人矫正此钟。