protected opening
查询英语单词中文释义、音标、发音和例句。
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:2026-08-28 01:05:07