What does this ancient poem Niu Langxing mean?

The full text of the poem is: the distant Altair, the Korean girl by the Jiao Jiao River.

Skillful hands, make a loom.

There is no chapter all day, and tears are pouring down.

The river is clear and shallow, and there are many differences.

Between water and water, there are no words. From Anonymous in Han Dynasty, Cowherd Star.

Translated, that is; Altair can be seen far away in the southeast of the Milky Way, and Vega is bright and bright in the west of the Milky Way.

The weaver girl is waving her long white hands, and the loom keeps ringing.

I didn't knit a piece of cloth all day, and tears rained down.

The Milky Way looks clear and shallow. How far apart are the two banks?

Although only separated by a galaxy, we can only look at each other with deep affection and silence.