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send up a trial balloon
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:2026-02-01 09:40:21