upper tier
查询英语单词中文释义、音标、发音和例句。
upper tier
英
[upper tier]
美
[upper tier]
中文释义
上层(指原胚)
单词分析
单词结构:
upper tier
字母数:10
记忆提示
🎯 重点记忆:
- 单词拼写:upper tier
- 核心含义:上层(指原胚)
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更新时间:2026-08-28 23:28:40