Bluestone
n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
I came home a little while ago.
我也是刚刚到家。
I told him to stay for the weekend.
我告诉他留下来度周末。
The train arrived on time.
火车准时到达。