Newbie! Why would you turn the heat on in the freezer?

新来的！你为什么要打开冰箱里的制热？

I use it for making chocolate molds, turn the heat on, and this top part will heat up.

我用它做巧克力模具，加热，上面的部分会变热。

The chef turns the heat on, very low, and the temperature of water slowly rises.

厨师打开暖气，很低，水温慢慢上升。

That’s why the banging noises tend to happen more when you’ve just turned the heat on.

这就是为什么当你刚打开暖气时， 砰砰声往往会更多。