With up. Of an engine, electrical appliance, etc.: to reach a temperature high enough for efficient working.
| 单词 | θ72700 |
| 释义 | the world > matter > properties of materials > temperature > heat > be hot [verb (intransitive)] > be warm > become warm > of an engine, etc.: become warm enough (1) warm1947 With up. Of an engine, electrical appliance, etc.: to reach a temperature high enough for efficient working. |
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