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echo ranger造句

"echo ranger"是什么意思  
造句與例句手機(jī)版
  • Originally built in 2001 to capture high-resolution sonar images of sea beds for oil and natural gas companies, such as the Exxon Mobil Corporation, " Echo Ranger " underwent testing for possible use by the military.
  • During August 19, 2011, a Boeing-made robotic submarine dubbed Echo Ranger was being tested for possible use by the U . S . military to stalk enemy waters, patrol local harbors for national security threats and scour ocean floors to detect environmental hazards.
  • It's difficult to see echo ranger in a sentence. 用echo ranger造句挺難的
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