1. Whereas the region's native evergreen pines shade the snow and absorb radiation, birches would shed their leaves in winter, thus enabling radiation to be reflected by the snow. 然而那个地区当地的常绿松树可以为雪遮阴，吸收辐射，而白桦树在冬天则会落叶，从而使辐射被雪反射。
2. Higher up were forests of white birches. 再往高处去就是一片片白桦林。
3. Higher up were forests of white birches. 再往高处去就是白桦林。
4. 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。
5. The crag of birches running the sky's gray. 一排桦树在灰色天空下闪过。
