英语词汇“ballon d'essai”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ballon d'essai
释义	ballon d'essai /bann lawonn de se"/, pl. ballons d'essai /bann lawonn de se"/. French. See trial balloon (def. 1).
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