foolish and light-hearted
1 (of people, their character, etc) not sensible or serious; foolish and light-hearted （指人、性格等）不明事理的, 不严肃的, 漫不经心的, 轻率的, 肤浅的 *At 18, he's still rather frivolous and needs to grow up.
基于2个网页-相关网页
foolish and light-hearted
愚蠢和无忧无虑
以上为机器翻译结果，长、整句建议使用 人工翻译 。