padding
noun [ U ] uk/ˈpæd.ɪŋ/ us/ˈpæd.ɪŋ/
衬垫，衬料，填料
the pieces of material used to protect something or give it shape
（讲话、文章中的）铺张词藻，冗词赘句
unnecessary words or information added to a speech or piece of writing
It could have been an interesting essay, but there was too much padding. 这本来可以是一篇有趣的文章，可里面的废话太多了。