The word "unsustainable" is an adjective meaning not able to be maintained at the current rate or level, or not able to be proved or upheld.
“Unsustainable”是一个形容词，表示不能证实、不能成立或不能支持。
| 单词 | unsustainable |
|---|---|
| 音标 | [ˌʌnsəˈsteɪnəbl] [] |
| 释义 | adj.["不能证实的，不能成立的，不能支持的"] |
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