Manganocalcite
含钙菱锰矿
🗣️ 情景例句
What about your arms? Lift your arms up like this.
你胳膊怎么样?手抬起来， 像这样。
When would you like to leave?
你要什么时间离开呢？
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。