up on
查询英语单词中文释义、音标、发音和例句。
up on
英
[up on]
美
[up on]
中文释义
熟悉, 精通
单词分析
单词结构:
up on
字母数:5
记忆提示
🎯 重点记忆:
- 单词拼写:up on
- 核心含义:熟悉, 精通
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更新时间:2026-08-31 03:04:37