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Read a passage about Epiphytes from a biology textbook.
請閱讀這篇選自生物課本的關于附生植物的文章。
You will have 50 seconds to read the passage.
你將有50秒的時間閱讀文章。
Now listen to part of a lecture from a biology class.
請聽生物課上的部分內容。
OK, so a good example of this type of plant, common to the rainforest, is the Urn plant.
關于這類在雨林中很常見的植物，有一個很好的例子就是美葉光萼荷。
The Urn plant wraps its roots around the branches of the trees or sometimes around the trunk near the upper part of the tree.
美葉光萼荷會用它的根包裹住樹木的枝干，或者有時候也會包裹住靠近樹木上端的軀干。
They use the trees for support and this allows them to reside high in the trees, in the canopy, where they can get plenty of sunlight.
它們把樹作為支撐，這樣就可以在樹上很高的地方——樹冠上扎根了，它們在樹冠上可以獲得大量的陽光。
Now, the Urn plant has a unique shape.
美葉光萼荷的形狀很獨特。
It got its name because of the formation of its leaves creates a kind of urn or bowl where it can store water.
它得名“美葉光萼荷”是因為它的葉子構成了像甕或者碗一樣的形狀，可以用此儲藏水分。
The Urn plant has rather long stiff spiky leaves.
美葉光萼荷的葉子很長，又硬又尖。
The leaves are slightly overlapping and are tightly rolled into a kind of cone shape or a funnel shape.
這些葉子部分重疊，緊密地卷成了一個類似圓錐形或者漏斗一樣的形狀。
Its flowers are held on a single stem in the center.
它的花是由中心的一根莖干單獨托起的。
Anyway, as I mentioned, the arrangement of the leaves forms a kind of receptacle or bowl at the base
不管怎樣，就像我提到過的，這些葉子的排列在底部形成了一個容器或者碗，
so that its rainwater collects on the leaves it rolls down into the bowl where it can be stored.
所以葉子上凝聚的雨水就會滾進“碗”里，然后被儲藏起來。
OK, so its unique shape helps it gather and store water. It also helps to gather other nutrients.
所以，美葉光萼荷獨特的外形有助于它收集并儲藏水分，也有助于收集其他養(yǎng)分。
This is because insects, dead leaves from other plants or other debris land on the leaves and then get washed down into the stored water.
這是因為，當其他植物的枯葉或者別的碎屑落在葉子上時，會被沖刷進儲藏的水里。
Gradually they decompose. The chemical break-down creates a nitrogen-rich food source in the stored water.
它們漸漸地就會分解。而分解后的化學物質會在儲藏的水中制造出一種富含氮氣的食物來源。
