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observation balloon
observation balloon
英
[observation balloon]
美
[observation balloon]
中文释义
n. 观测气球
单词分析
单词结构:
observation balloon
字母数:19
记忆提示
🎯 重点记忆:
单词拼写:observation balloon
核心含义:n. 观测气球
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更新时间:2026-01-31 09:14:39