They naively assume things can only get better.

他们天真情况只会变好。

I had fondly imagined that riding a mule would be easy.

我曾经天真骑骡子很容易。

The outcome was not what he fondly expected.

结果并不象他天真希望的那样。

The bamboo shoot, after showing its tip, unfolds the thinking, catching the sunlight, artlessly and vivaciously grows up and up, talks with the blue sky in its fresh and tender heart language.

初露头角的幼竹，展心思，抓住阳光，天真活泼引领向上，用鲜嫩的心语与蔚蓝的天空交谈。