Higher up were forests of white birches.

再往高处去就是白桦林。

Higher up were forests of white birches.

再往高处去就是一片片白桦林。

When I see birches bend to left and right.

当我看到白桦树弯下身子，向左，也向右。

The crag of birches running the sky's gray.

一排桦树在灰色天空下闪过。

The trees were silver birches, four of them.

树是银色树皮的桦树，一共四棵。