The word 'breakthrough' is a noun that refers to a significant advance or discovery.
单词 'breakthrough' 是一个名词，指突破、重要成就或穿透。
| 单词 | breakthrough |
|---|---|
| 音标 | [ˈbreɪkθru:] [ˈbrekˌθru] |
| 释义 | n.["突破","穿透","重要技术成就","炉衬烧穿"] |
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