The air was sweet and pure.

空气清新而纯净。

《牛津词典》

Or laughter, which is sweet laughter, or tears, this is pure tears.

抑或是欢笑，这笑是甜的，抑或是流泪，这泪是纯的。

youdao

The melody floated out of the instrument, sweet and pure and honest.

乐器飘扬出甜美、纯净、朴实的旋律。

youdao

I bent my head backward to drink in the stars, and clearly I heard a song so sweet and pure I had to hold myself to keep from breaking.

VOA: special.2009.02.14

So Kitamura encouraged Bell to redesign his bagels--a minor craze in Japan--folding the sweet ingredients into the dough. (A pure New Yorker will not tolerate even minor adulterations, like raisins.) They're flying off shelves in Tokyo and Osaka.

FORBES: Doughboy