既然与大脑多巴胺反馈回路相关联，笑鼓励宝贝们去探索世界使自己感觉高兴和安全。

Since laughter is associated with activity in the brain's dopamine reward circuitry, it encourages babies to explore the world by making them feel happy and safe.

youdao

你感觉好些了我很高兴。

I'm glad (that) you're feeling better.

《牛津词典》

听说你感觉好些了，我很高兴。

I'm glad to hear you're feeling better.

《牛津词典》

I'm glad is a pattern that you want to use in a sentence to describe when you're feeling happy.

当你感觉高兴的时候，你可以用“I'm glad”句型来形容你的感受。

I'm glad 课堂 - SpeakingMax英语口语达人