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单词 ack-ack
释义

ack-ack

noun
/ˌæk ˈæk/
/ˌæk ˈæk/
[uncountable] (informal)
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  1. the repeated firing of guns at aircraft
    Word Originsignallers' name for the letters AA; ack for A was replaced in military use by able in 1942.
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更新时间:2024/9/22 8:33:02