A birch should be big. Then hammer a tube into the tree. First drops! Wait.(選擇較為高大的樺樹，用錘子將導管釘入樹體，第一批樹汁流出來了，耐心等待。)

This efficiency of the birch bark canoe also made an impression on newcomers to the area.(這種樺樹皮獨木舟的效率也給新來的人留下了深刻的印象。)

If you peel birch bark in the winter, we call it "the winter bark", another layer, a tougher inner layer of the tree adheres to the bark, producing a stronger material.(如果你在冬天剝樺樹皮，我們稱它為“冬樹皮”，另外一層更加堅硬的緊貼樹皮的樹層就可以生產出更強更硬的材料。)

The Native American people were all adept at running very fast over the snow in these birch branch snowshoes, which if you ever tried walking in snowshoes you know it wasn't easy.(印第安人都很擅長穿著樺樹樹枝做的雪鞋在雪地上跑得飛快；如果你試過穿著雪鞋走路，你就會明白，這其實并不輕松。)

The allergen in jackfruit does not sensitize the immune system, but once birch pollen has done so, the immune system may react to jackfruit too.(菠蘿蜜中的過敏原不會使免疫系統敏感，但是一旦樺樹花粉刺激了免疫系統，免疫系統也會對菠蘿蜜有反應。)

Pouring rain and howling wind tried to fell the Mother Birch, but she stood firm.(大雨和狂風試圖要打倒白樺媽媽，但她穩穩地站立著。)

The birch tree can grow in many different types of soils and is prevalent in that area.(樺樹能在許多不同類型的土壤中生長，且在那個地區是很常見的。)

One great thing about these birch bark canoes was that they could carry a large amount of cargo.(這些樺樹皮獨木舟的優點之一是它們可以裝載大量貨物。)

This clump of paper birch trunks was backlit by a blaze of reds and yellows.(這一叢紙樺樹樹干的背光是一片紅黃相間的火焰。)

Now besides the bark, Native Americans also used the wood of the birch tree.(現在除了樹皮，印第安人還使用樺樹的木材。)