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protected opening
protected opening
英
[protected opening]
美
[protected opening]
中文释义
设防洞口
单词分析
单词结构:
protected opening
字母数:17
记忆提示
🎯 重点记忆:
单词拼写:protected opening
核心含义:设防洞口
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更新时间:2026-03-13 10:02:22