If I write a poem, called My Favorite Toy, and assign the CC license Attribution (cc-by) to it, and you take my poem, which was written in English, and translate it in Chinese, and then put the translation of the poem on an ad to sell stuffed animals, you can do this without paying any money to me, or getting any further permission from me. However, you must credit me with the original poem. You look at your original source, and see how I am requesting you attribute the work. In this case, the poem shows my user name for the site, rscudder, and says attribution. So you would put the poem in your stuffed animal ad, and at the end of the poem you would put my screen name. To show that your use is legal, you can display the CC license I chose next to my name, and you can, although it is not required, provide a link both to the original site where the poem was found, and a link to the text explaining the license.
This would look like this:
My favorite Toy, by rscudder cc
If there was such a poem, and I had published it on a blog with the CC license Attribution, you could also put a link to that site under the text of my user name.
There is also a symbol created by Creative Commons which you can put by my name, which is an icon meaning attribution. I may also have put that symbol next to the text of the poem, along with the name of the license, and I might also have put cc next to that, so you could go and read the terms of the license.