Nanlingite
南岭石
🗣️ 情景例句
He's stepped out of the office for a little while.
他离开办公室刚一会儿。
What time is the mail delivered on Saturday?
邮件在星期六什么时间被递送？
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？