我感到非常无比的放松和欢欣。

I felt a tremendous sense of relief and exultation.

《柯林斯英汉双解大词典》

——收到预期中的礼物令人快慰，但得到意想不到的纪念品更令人无比欢欣。

Expected gifts are a pleasure to receive, but unexpected remembrances are even a greater joy.

youdao

我一再想起所有这些时，对我来说，似乎那些个夏天无比珍贵，值得收藏，有过欢欣、安宁和益处。

It seemed to me, as I kept remembering all this, that those times and those summers had been infinitely precious and worth saving. There had been jollity and peace and goodness.

youdao