如何使用 "excavation" 造句

1. 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。
2. 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。
3. 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。
4. 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。
5. 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。