open adj.开着的；开放的；公开的v.打开；张开；展开；摊开；开始(某事物)；开张；营业；以…开头；宣布启用n.户外；公开
双语例句
Rain has serious effect on the operation of long and narrow deep open pit. 降雨对狭长深凹露天矿的生产有严重的影响。
The optimal furrow pit direction and the optimal slope configuration fit to the little north open mining was obtained. 优化设计所取得的边坡形状为金堆城露天矿最大限度的减少废石剥离量，指导采区安全生产提供了帮助。
