Zhège dìqū de cǎikuàngyè fēicháng fādá.
The mining industry in this region is very developed.
Fēifǎ cǎikuàng pòhuài le dāngdì de shēngtài huánjìng.
Illegal mining has damaged the local ecosystem.
Cǎikuàng jìshù zài búduàn jìnbù.
Mining technology is constantly advancing.
