So was I once myself a swinger of birches.

当年，我自己也是“荡桦树”的能手。

The native Wabanaki people arrived there in boats made from the wood of birch trees.

当地的瓦巴纳基人乘坐用白桦树木制成的船只抵达那里。

Ancient gums were made from local plants like birch bark tar used for Finland's wad.

古代的口香糖是由当地的植物制成的，比如说芬兰口香糖使用的白桦树皮焦油。

Researchers used lasers to scan birch trees in both Finland and Austria.

研究人员用激光扫描了芬兰和奥地利的桦树。

Trees like paper birch white or silver poplar, acacia and eucalyptus light up the night.

白色的纸桦树或银色的白杨树、金合欢树和桉树等树木点亮了夜。

The plant DNA painted a picture of forests dominated by poplar and birch trees.

植物DNA描绘了一幅以白杨树和白桦树主的森林图景。

But the most formidable challenger is the humble downy birch.

但最强大的挑战者是不起眼的绒毛桦树。

I put the last of my birch bark on the fire and fanned it into life.

我把剩下的桦树皮全部放进火堆里，然后扇火使它再次燃烧起来。

In a small pot on the worktop were shavings of birch bark for tisanes and medicinal brews.

工的一小锅里放着白桦树皮的刨花，用于制茶水和药酒。

I quickly made a bed of boughs and started a fire with the bark of an old dead birch.

我很快用树枝搭了床，用枯死的桦树的树皮生火。

As I drove, all along the roadside shrubby birch kept close company with the car.

当我开车时，路边的灌木丛中的桦树一直与汽车紧紧相伴。

Birch is one of the few species of tree that can survive in the extreme environments of the upper timberline.

桦树是少有的能够在行树带界线，这种极端天气情况下存活的树种。

The DNA of the birch trees lacked many of the mutations that living species have, indicating that they were ancient.

白桦树的DNA缺乏许多现存物种所具有的突变，这表明它们是古老的。

I pass my hands lovingly about the smooth skin of a silver birch, or the rough bark of a pine.

我的手爱抚着白桦树光滑的树皮，或是松树粗糙的树干。

And good afternoon dear birches down in the hollow.

下午好，山谷里亲爱的桦树。

After three days, they reach the upper valley, emerging into a glade of birch trees.

三天后，他们到达了山谷，进入了一片白桦树林的空地。

And behind it would be an exact twin in Golden Fagus.

在其背后，将是一株与金叶白桦树完全相同的孪生树。

Nejdanov leaned against a solid wall of young birches casting a heavy though mild shade.

Nejdanov 靠在一堵结实的小桦树墙，树荫投射出浓重但温和的阴影。

Meanwhile in the Russian Arctic, geo-engineering plans include the planting of millions of birch trees.

而在俄罗斯的北极地区，地球工程计划在此种植成千的桦树。

Nimbrethil the birch-woods in Arvernien, and Fimbrethil, one of the Entwives.

Nimbrethil 是 Arvernien 的桦树林，还有 Entwives 之一的 Fimbrethil。