background material
查询英语单词中文释义、音标、发音和例句。
background material
英
[background material]
美
[background material]
中文释义
背景材料
单词分析
单词结构:
background material
字母数:19
记忆提示
🎯 重点记忆:
- 单词拼写:background material
- 核心含义:背景材料
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更新时间:2026-08-29 08:01:59