It's going to be difficult to transport this large boat from my village to yours.

It's hard to bounce a heavy ball.
(That is, it's difficult to make someone who is stubborn or inept do what you want them to.)

(All's well that ends well).

He asked a difficult question.

Needless to say, due to the coronavirus, the world has changed, life has changed. And many people fear for the future. Perhaps the most difficult thing of all right now is the social distancing. We have to stay at home. We can't go out to work. We can't hug each other.

All beginnings are difficult.

For many people, change is difficult.

Your questions are always difficult but also important.

That old woman's hearing is poor. A conversation with her is very difficult.

Public speaking is very difficult for me. I'm hopelessly bad at it.

It's hard to keep holding a bow while climbing a tree.

That was a really hard climb!

Taking off from the ground is harder than flying off a cliff.

It's very hard for a tapirus to survive there.