The good words made her feelgood.

那些好话使她感受心里很惬意。

The bond coincided with a huge release of the feelgood chemical dopamine inside their brains.

而有了配偶的田鼠开始大量分泌一种叫做多巴胺的化学物质（人脑也会分泌该物质）。

The negative ions can also affect levels of serotonin, the feelgood hormone, making us less prone to anxiety and improving our quality of sleep.

负离子还影响血清素（愉悦荷尔蒙）浓度，使我们不容易焦虑，并改善我们的睡眠质量。