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send up a trial balloon

英 [send up a trial balloon]
美 [send up a trial balloon]

中文释义

释放风向气球

单词分析

单词结构:

send up a trial balloon

字母数:23

记忆提示

🎯 重点记忆:

  • 单词拼写:send up a trial balloon
  • 核心含义:释放风向气球

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更新时间:2026-02-02 13:14:39

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