VERB
預熱；預先加熱
If you preheat an oven, you switch it on and allow it to reach a certain temperature before you put food inside it.
例句
Preheat the oven to 400 degrees...
將烤箱預先加熱到400度。
Bake in the preheated oven for 25 minutes or until golden brown.
在預熱過的烤箱里烤25分鐘，或烤成金黃色。