看得見的高溫
這是畫面本身：金屬或火燒到發出白光。後面的用法全都借用這個畫面。
adjective · C1
Heated so much that it glows with a bright white light. It is said most often of metal, which turns red first and then white as it gets hotter, and also of flames and burning things.
白熱的（熱到發白光）
核心畫面
Picture a bar of iron going into a fire. It darkens, then glows dull red, then orange, and if the fire keeps going it turns a bright, painful white. That white is the top of the scale — you can see the heat rather than feel it. Everything this word does can be traced back to that last colour: white means the highest setting, whether the thing being heated is a piece of metal, a person's anger, or a market.
可以想成一根鐵棒被放進火裡。它先變暗，接著發出暗紅的光，再轉成橙色；火要是繼續燒，它會變成刺眼的白。那個白是這條階梯…更多收起
可以想成一根鐵棒被放進火裡。它先變暗，接著發出暗紅的光，再轉成橙色；火要是繼續燒，它會變成刺眼的白。那個白是這條階梯的最上面一階——熱到你用看的就知道，不必伸手。這個字的每一種用法都能拉回那個顏色：白代表強度開到最大，不管被燒熱的是一塊金屬、一個人的怒氣，還是一個市場。Two branches
強度開到最大的情緒與場面
把那條顏色階梯搬到看不見的東西上。紅還算熱，白是頂點，所以 white-hot 講的是強度到了最上面一階。
adjective · C1
Full of very strong feeling, or full of intense activity. A white-hot feeling such as anger or love is at its strongest point; a white-hot period, market, or contest is moving fast and drawing a lot of attention.
熾熱的；白熱化的