Bluestones
(bluestone 的复数) n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
Go ahead, Philip.
去吧 Philip。
What's the matter with you?
你怎么啦？
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。