"Dial that heat up to 11" is an idiomatic expression that means to increase the intensity or level of something to the maximum possible. افزایش دادن شدت یا سطح چیزی به حداکثر ممکن.
The chef knew the dish needed an extra kick, so she decided to dial that heat up to 11 by adding a generous amount of spicy peppers and chili powder.
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The competition was fierce, and the team needed a motivational boost. The coach encouraged them to dial that heat up to 11 and give it their all in the final moments of the game.
They prefer to act through their proxies in the region, keeping up some heat on Israel and the United States, but certainly not by dialing that heat up to 11.