Coalfields
n. 煤田( coalfield的复数形式 )
🗣️ 情景例句
That's right.
是的。
He seems very serious, but in fact he has a delightful sense of humor.
他看上去很严肃，其实很诙谐。
they aroused great interest at the time, they had important theoretical consequences,
这些观察在当时引起了人们极大的兴趣，具有重要的理论意义，