| 释义 |
Falling rocks短语⁷⁶⁷⁴⁷
基本例句
当心落石
The simulation calculation and practices showed that the goaf side gateway backfilled with rushed falling rocks could keep the stability of the goaf side gateway system.
经过模拟计算和实践证明：利用破碎矸石充填留巷能够确保留巷系统的稳定性； www.mtkxjs.com.cn
There were signs everywhere warning people to look out for falling rocks.
到处都有警告人们当心落石的告示牌。 go7d.com |