Now the sky up there isn't dark and bare.

现在天空那边不再裸露着黑暗了。

It's evening. The sun goes to sleep in the sea, and the sky up there is dark and bare.

傍晚，太阳降低海平面去睡觉了，在天空的那边裸露着黑暗。

You cannot say, “I looked the sky up, ” with the meaning “I gazed upwards at the sky.”

你不能说“I looked the sky up” ，意思是“我仰望天空” 。

This is mostly coincidence, but humans are pattern-recognizing animals, so it's totally understandable that ancient astronomers divided the skies up into constellations (literally sets or groups of stars), and named them after familiar objects.

这大多是巧合，但人类是能识别模式的动物，所以古代天文学家就把天空分成不同的星座（字面意思是“星星的集合或群”），并以与其相似的物体来命名，这是完全可以理解的。

I'd go out into a great big field all alone or into the deep, deep, woods, and I'd look up into the sky—up—up—up—into that lovely blue sky that looks as if there was no end to its blueness.

我会一个人走进广阔的田野，或者走进很深很深的树林，我会仰望天空——仰望——仰望——那可爱的蓝天，仿佛没有尽头到它的蓝色。