protective course
查询英语单词中文释义、音标、发音和例句。
protective course
英
[protective course]
美
[protective course]
中文释义
保护层
单词分析
单词结构:
protective course
字母数:17
记忆提示
🎯 重点记忆:
- 单词拼写:protective course
- 核心含义:保护层
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更新时间:2026-08-30 12:45:50