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- Still another system used in underground mining, which is called caving. This involves making the ore cave in on mined chambers or shafts. The ore is then removed by chutes that carry it down to a deeper level, where there is a haulage system. 地下开采使用的另一种采矿法叫作崩落采矿法。这种方法包括使矿石崩落于已采峒室或井筒，然后矿石再通过溜井放到下面水平的运输巷道。
- The ore is smelted in this large factory. 这个大型工厂里熔炼矿石。
- All opposition to the plan has caved in. 这个计划的反对派全部屈服了。
- These bullets fragment on impact. 这些子弹射中物体时爆炸成碎片。
- First, ore is mixed with coke and limestone. 先把铁矿石和焦碳、石灰石混合在一起。
- top slicing combined with ore caving 下向水平分层崩落采矿法
- A hermit used to live in the cave. 一位隐士曾经住在那个山洞里。
- The wall caved in without the slightest warning. 事先大家毫无察觉的情况下墙塌了。
- We will make an assay of the ore that he brought. 我们将对他带来的矿石做实验鉴定。
- Our cellar caved during the earthquake. 地震时,我们的地窖塌陷了。
- We kindled a firebrand in the cave. 我们在山洞里点燃火把。
- A mouse ran out from the dark orifice of the cave. 一只老鼠从黑暗的洞口跑出。
- The roof of the old house caved in. 那栋旧房子的屋顶塌下了。
- A disconnected piece; a fragment. 不相连的一块; 片段
- A bin for storing ore, grain, or other materials. 仓库储放矿石、谷物或其它材料的大箱
- There are pockets of ore in the mountain. 那座山里有好几块矿藏。
- There are streaks of ore in the mountains. 这山里有矿脉。
- Seen from within, the cave looked larger. 从内部看，那个地洞显得更大。
- Iron ore has been discovered in the area. 这地区发现了铁矿。
- A fragment of dried animal dung used as fuel. 干粪块一块用作燃料的干燥过的动物粪便
