B1 [ S or U ] the quality of being hot or warm, or the temperature of something热,高温,热度
More examples
Turn the oven to a low heat.
Firefighters were driven back by the heat of the flames.
A greenhouse stays warm because the glass traps the heat of the sun.
Let the liquid come to the boil and then reduce the heat.
The flowers were drooping in the heat.
[ C ] a less important race or competition in which it is decided who will compete in the final event预赛,小组赛
B2 to make something hot or warm, or to become hot or warm(使)变热,(使)变暖
More examples
She's too miserly to heat the house properly.
The fire heats the room up within minutes.
The room was heated by a wood-burning stove.
If you heat water to 100°C it turns to steam.
Some kinds of plastic become pliable if they're heated.
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