复数： excavations

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But further excavation efforts failed in 1970 , 1971 , 1974 and 1979 .

但是1970、1971、1974、1979年的挖掘努力都以失败告终。

Archaeologists said further excavation was impossible because the destruction was so bad .

考古学家称遗迹破坏严重，无法再进行发掘。

On october 18th , therefore , 19 robots competed in the regolith excavation challenge .

为此，10月18日共计19个机器人参加了挖掘浮土挑战赛。

Excavation was under way on a new trench , on the other side of a low limestone ridge .

在一条低矮的石灰岩脊体的另一侧，新的挖掘工作已经开始。

An excavation of a bronze-age city in south-eastern iran turned up a pair of dice dating back nearly 5000 years .

伊朗东南部挖掘出来的一座青铜时代城市中发现了一对快到5000年的骰子。