给定一篇英文文章，将其中的所有单词按字母顺序排序并去除重复项，输出排序后的单词列表。
"The quick brown fox jumps over the lazy dog. A quick movement of the enemy will jeopardize six gunboats."
A, brown, dog, enemy, fox, gunboats, jeopardize, jumps, lazy, movement, of, over, quick, six, the, will