openpitadj.露天采掘的openadj.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open the book翻书open stairway明楼梯,露氓梯open channels开放通道open woodland稀疏丛林,开阔林地open terminal开敞式码头open traverse不闭合导线,开路导线open spectrum开放式频谱open hospital[医] 开放医院open subgroup开子群open/short断路／短路