Jiningite
褐铀钍矿, 集宁石
🗣️ 情景例句
I don't.
我没打。
Do you usually lenrn Japanese on Saturday?
你通常在星期六学日文吗？
Cave exploration, or pot-holing, as it has come to be known, is a relatively new sport.
洞穴勘查——或洞穴勘探——是一项比较新的体育活动。