birch

The birch tree in our backyard is over a hundred years old.

我们后院的白桦树已经有一百多年的历史了。

The landscape was dotted with birches, their white bark standing out against the green foliage.

风景中点缀着白桦树，它们的白色树皮与绿色的树叶形成鲜明对比。