采石工程 meaning in English

quarry engineering
quarry operation
quarrying
rock excavation

In 2003 , a 330 - metre section of tung chung stream was damaged by illegal excavation work by a sub - contractor supplying boulders to disneyland . after months of intense restoration effort the stream was back to life . however , the current threats facing by the stream may be even worst than the excavation incident
2003年，其中一段330米长的河段遭向迪士尼供应石块的副承建商非法采石工程破坏，经过多个月艰钜的修复工程后才回复生气，然而今次河流面对的威胁可能比挖石事件更为严重。