optimistic, fun, children, whistle, Easter Day, promo, ukulele, advertising, happy, marketing, jolly, cheerful, lively, active, bouncy, easy
乐观，有趣，孩子，哨子，复活节，促销，尤克里里，广告，快乐，营销，开心，开朗，活泼，活跃，活力，轻松