Bluestones
(bluestone 的复数) n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
Please try to keep relaxed, sir.
别太紧张，先生。
This is your last chance. I believe you can make it.
这时你最后的机会，我相信你会成功的。
' I looked down and nearly fell off the ladder when I saw a policeman.
”我向下面看去。当我看清是一个警察时，差一点儿从梯子上掉下去。