It means that a barrel of oil (value of the dollar is but one factor) or an ounce of gold costs more dollars than it used to.
American goods, such as hollywood movies and .....and.....( I can't think of anything else we manufacture) will be easier to sell overseas because they will cost fewer euros, yen, etc. We will likely see more foreign tourists because their vacation money will buy more here than it will in Europe.
If you want to buy a rifle manufactured in Belgium you will have to pay more dollars for it, because it takes more dollars to equal a euro. If you want to buy a camera made in Japan you will have to pay more dollars for it. If you want to import saltpetre from Chile to make fertilizer it will cost more dollars. Anything we buy on the world market will cost more dollars. Anything we sell on the world market will cost fewer euros, yen, wan, etc.