Some mining families resorted to scavenging for coal on slag heaps, a desperate move as most of the "slag" was very dangerous and liable to tip.
一些矿工家庭靠捡矿渣堆中的煤块解燃眉之急，这是一个绝望之举，因为大多数“矿渣”十分危险，极易倒塌。
2
Note, clearance of parasites is only the tip of the iceberg. An equally important task is to restore the human immune system, remove the slag, and prevent re-infection.
注意：寄生虫的清除只是冰山的一脚。最重要的任务是回复人体的免疫系统，移除废弃物以及预防再次感染。
3
The removal of non-metallic inclusion during remelting occurred mainly in stages of formation of dropets on the consumable electrode tip and dropets falling through the slag.