1. She remained untroubled by the chaos around her.
她对身边的混乱保持着淡定。

2. Despite the difficult circumstances, he appeared untroubled and calm.
尽管环境困难，他看起来依然从容镇定。

3. The peaceful scenery left her feeling untroubled and content.
宁静的风景让她感到无忧无虑和满足。

4. The child's untroubled laughter filled the room with joy.
孩子无忧无虑的笑声让房间充满了欢乐。

5. He faced the challenge with an untroubled mind, knowing he had prepared well.
他以无忧无虑的心态面对挑战，知道自己已经做好了准备。

6. The old man sat by the lake, his expression untroubled as he watched the sunset.
老人坐在湖边，他看着夕阳，面无表情。