deep-trough open pit

例句：

1. 1. The deep-trough open pit is a type of mining method that involves excavating a large pit in the ground and then filling it with ore.
   深沟露天矿是一种采矿方法，它涉及在地下挖掘一个大坑，然后填充矿石。
2. 2. The deep-trough open pit has been used for centuries to extract valuable minerals from the earth.
   深沟露天矿被使用了几个世纪来从地球中提取有价值的矿物。
3. 3. Due to its high efficiency and environmental benefits, deep-trough open pit mining is becoming increasingly popular inmodern mining practices.
   由于其高效率和环保效益，深沟露天矿开采正逐渐成为现代采矿实践越来越受欢迎。