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单词 sonar
释义

sonar

noun
/ˈsəʊnɑː(r)/
/ˈsəʊnɑːr/
[uncountable]
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  1. equipment or a system for finding objects underwater using sound waves compare radar
    Oxford Collocations DictionarySonar is used before these nouns:
    • signal
    See full entry
    Word Origin1940s: from so(und) na(vigation and) r(anging), on the pattern of radar.
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更新时间:2025/3/10 15:28:02