Coalfield
n. 煤田
✅ 同义词
📖 牛津释义
coalfield
n district in which coal is mined 采煤区.
🗣️ 情景例句
How long does it take you to get through a letter?
你写一封信要花多少时间？
May I borrow your book?
我能借你的书吗？
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。