sonar
英 [ˈsəʊnɑː]
[NOUN]
sonars
1. [C, U 有变体名词] 声纳
Sonar is equipment on a ship which can calculate the depth of the sea or the position of an underwater object using sound waves.
NOUN. 名词
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sonars
Sonar is equipment on a ship which can calculate the depth of the sea or the position of an underwater object using sound waves.
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