"The food will get cold."
Here's a breakdown:
* khana: food
* thanda: cold
* ho jayega: will become/get
This phrase is commonly used to express concern that food will become cold if it is not eaten quickly.
Here are some other possible translations, depending on the context:
* "The food will go cold."
* "The food will cool down."
It's important to choose the translation that best fits the specific situation and the intended meaning.