Bluestones
(bluestone 的复数) n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
Yes, we are surprised to meet you here.
是的，我们意外在这儿见到了你。
The class made noticeable improvement.
这班有明显的进步。
It's nothing serious.You'd better have a good rest.
（病情）不太严重。你最好好好休息一下。