Zincocalcite
锌方解石
🗣️ 情景例句
Learning to express onself well is an important part of education.
学会把意思表达清楚是受教育的一个重要方面。
The class made noticeable improvement.
这班有明显的进步。
but he will never sacrifice his freedom.
但他决不会牺牲自由。