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词汇 sonar
词根词缀
Online Etymology Dictionary
词根李平武蒋争

sonar
n.
apparatus for detection underwater, 1946, from first letters of "sound navigation ranging," on pattern of radar.

〔李〕[son;-arn.] n.声纳 ←son (L sonus)=sound 声音
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更新时间:2025/3/14 14:42:26