What, specifically, are you confused by? Do you understand each individual word?
By the way, you may wish to take another look at your member profile. You have marked that you are an Abkhasian native speaker (a disputed territory in Georgia on the Black Sea), whose home country is Argentina and that you are currently in Botswana. Please check those details as the first two particularly seem a rather unlikely coupling. Which school in Botswana are you studying English at?