极少使用。在柯林斯辞典中， preheat 属于使用频率排在后 50% 的词语之一。
英式英语: preheat VERB
If you preheat an oven, you switch it on and allow it to reach a certain temperature before you put food inside it.
Preheat the oven to 400 degrees.
preheat 的定义—— 柯林斯 英语词典
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