他的眼睛周围有细细的皱纹。

He has fine lines around his eyes.

《牛津词典》

三天过去了，我惊讶地再次看到：所有的开口都是用细细的白线缝起来的，看上去就像北方冬天树枝上的冰晶。

Three days went past, and I was surprised to see it again: all the openings were sewed up by thin and white thread and they looked like the ice crystal on winter's branches in the north.

youdao

细细的线，这个粗线是作者。

And the actual data are these very thin lines.

youdao