- hazardous operation
- n.危险的作业
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
Operation Sea Lion — Part of Western Front of the Second World War Operational scope … Wikipedia
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Operation CHASE — (Cut Holes and Sink Em) was a United States Department of Defense program that involved the disposal of unwanted munitions at sea from May 1964 into the early 1970s.[1] The disposal program involved loading old munitions onto ships which were… … Wikipedia
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