Marlstone
n. 泥灰质岩
✅ 同义词
🗣️ 情景例句
The book is above me.
这本书我读不懂。
John has extracurricular activities. He's on the football team.
约翰有课外活动。 他参加了足球队。
Are you in Row 5?
你是在第五排吗？