echo ranger造句

例句与造句

1. 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.
2. 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.
3. It's difficult to find echo ranger in a sentence. 用echo ranger造句挺难的