Bluestone
n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
I can't understand modern art, to me it look like rubbish.
我不能理解现代艺术，对于我来说，那些东西简直就是垃圾。
I have too much work to do to take time off for fun and games.
我工作多得没有游戏玩乐的时间。
What happened before printing was invented?
印刷术发明以前是怎么一回事？