imitative sound of a sheep, attested from 1580s, but probably older, as baa is recorded before this a name for a child's toy sheep. Compare Latin bee "sound made by a sheep" (Varro), balare "to bleat;" Greek blekhe "a bleating;" Catalan be "a sheep."
双语例句
1. The yield of the product N - BAA was 92 % under above conditions.
在最佳条件下,N-BAA的收率可达92%.
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2. BAA aims to derive most of its revenue from managing and chartering private jets.
BAA打算通过私人飞机管理和租赁业务赚取大部分收入.
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3. And , third, these airports should be set free to compete with Heathrow by breaking up BAA.
第三, 这些机场应该用免费政策来打击BAA,与希思罗竞争.
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4. The BAA Board is formed through election at the annual member meeting.
