Empressite
粒碲银矿
🗣️ 情景例句
Please sit down, Alexandra.
请坐 ，Alexandra。
Which umpire will referee the baseball game?
不知道哪一个裁判要执法这场棒球赛？
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？