Matlockite
氟氯铅矿
🗣️ 情景例句
What's the problem?
是什么问题？
I'll leave the house at 8:00 and get to the office at 8:30.
我将在8:00离开房子并且在8:30到办公室。
Yu Yan and Jim were neck and neck. They both passed on their sticks at the same time.
余延和吉姆跑得一样快。