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concave upward
concave upward
英
[concave upward]
美
[concave upward]
中文释义
凹口向上
单词分析
单词结构:
concave upward
字母数:14
记忆提示
🎯 重点记忆:
单词拼写:concave upward
核心含义:凹口向上
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更新时间:2026-02-20 13:23:40