(someone) is out there (doing something)

Use this phrase to talk about someone who's working hard:

Look at Prashant. He's out there talking to clients, making deals. That's why he's our #1 salesperson.

We're not the ones who are out there risking our lives every day, so I don't think we have any right to criticize how the police operate.

(someone) harvests (a crop)

After a crop (like vegetables, wheat, cotton, tobacco, etc.) finishes growing, you "harvest" it. That means to pick or collect it.

Wheat is harvested in mid-autumn.

"Harvesting" specifically means collecting a large amount at once. So if you just pick a few vegetables from a garden at a time, it's not called "harvesting".

food from (someone's) garden

A "garden" is an area where you grow plants. There are both "vegetable gardens" and "flower gardens".

When people grow their own vegetables and fruits, they call it "food from the garden".

You can never be sure (clause)

You can use this phrase to talk about something that's difficult to know for sure.

You can never be sure when an earthquake will hit.

You can never be sure whether they're serious or joking around.

You can never be sure how much money you'll need in order to fund your retirement.

(something) is being done to (something)

You can use this phrase to talk about a wide variety of subjects: a group of people, a product, the environment, etc. This means that someone is doing bad things to the subject:

Something horrible is being done to the rainforests.

This means that some people are doing bad things to the rainforests.

We've got to stop what's being done to the educational system in this country.

This means that some people (like maybe politicians) are harming the educational system, and we need to stop that.