Somehow he remained an optimist despite all that had happened to him.尽管经历了所有那些不幸，他总是设法保持乐观的心态。Somehow he remained optimistic despite all that had happened to him.尽管经历了所有那些不幸，他总是设法保持乐观的心态。He maintains a sense of optimism, despite all that has happened.尽管发生了这一切，他仍保持着乐观的态度。