Bluestone
n. 硫酸铜, 胆矾\\n[化] 胆矾; 蓝灰砂岩
🗣️ 情景例句
Keep your eyes on the road.
专心开车。
He has a very bad stomachache from eating too much.
他因为吃得太多而导致胃痛。
The underground railway runs 24 hours a day, and there are all-night cinemas, bars and restaurants.
地铁一天24小时不停地运营。还有通宵电影院、酒吧间和餐馆。