A massive oak claims its ground for 200 years or more, outcompeting all other would-be canopy trees by casting a dense shade and drawing up any free water in the soil.
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10. 一些果园园主试图通过修剪，发芽和分支弯曲来控制树冠形状，以规避该问题。
Some orchardists have tried to control crown-shape by pruning, disbudding and branch-bending to circumvent the problem.
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11. 树冠是氧的来源，是神奇光合作用的制造者。
The crown is the source of oxygen, worker of the magic of photosynthesis.
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12. 阳光穿过树冠穹顶的缝隙洒下。
Sunlight streams down through gaps in the towering vault.
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13. 栗子树在我们头顶撑开缀满繁花的树冠。
Overhead the chestnut branches were covered with blossom.
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14. 在徽标中，树冠的多处地方体现了森林的多种价值。
In the logo, the many parts of the crown represent the multiple values of forests.
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15. 冷杉的树干是黑色的，而树冠则披着白色。
The fir tree is black at the trunk, white out at the edges.
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16. 除了飞得快，它还住在树冠里，这使得它更难被观察到了。
As well as the speed it lives in the canopy, making it an even more difficult species to enjoy.
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17. 上面的地图通过绿色阴影的深浅标示出美国森林的树冠高度。
The map above shows forest canopy height for the United States in shades of green.
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18. 刚果军中一名中尉似树冠层里哀嚎的猴子，毫不遮掩沮丧之意。
AS MONKEYS howl in the jungle canopy above, a weary Congolese army lieutenant makes no secret of his frustration.
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19. 留意路边的山毛榉树林—徒步穿越雨林，还可以爬到树冠上的平台。
Keep your eyes peeled for Beech forest - tramp through rainforest and climb platforms above the canopy.
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20. 温带林地火灾火焰干烈、蔓延迅速，有时会一直沿着树干烧至树冠。
Temperate-forest fires burn hot and fast, and sometimes all the way up to the crown of a tree.
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21. 这种假设合情合理：蝙蝠喜食花蜜，而且可以轻易接近树冠处的花朵。
The supposition made sense: Bats are nocturnal, many of them are avid nectarivores, and they can easily reach the highest blooms in a tree.
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22. 我们来看看这里的根，然后是树干再往上，样华丽的树冠在音乐上被称为什么呢？
So we've got the root here of the — and then the trunk and then up above, this florid canopy would musically be the what?
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23. 研究人员研究了生活在红树林沼泽地带的水母，他们发现水母的眼睛总是盯着树冠。
The studied jellies live in mangrove swamps and the studied eyes are always aimed at the tree canopy.
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24. 我知道这个标志看起来简单，单调的绿树，但是如果看树冠会发现它被诠释为大脑。
I know this logo looks like a simple, boring green tree, but if you look at the tree crown, you'll see that it can also be interpreted as a brain.
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25. 这个新英格兰地区的度假村现在除了提供他们的滑雪场外还提供全年的树冠之旅。
A number of New England ski resorts now offer year-round zip line Tours in addition to their ski slopes.
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26. 这种真菌，属Ophiocordyceps种，以生活在泰国雨林树冠层的木蚁为目标。
The fungus, a species of Ophiocordyceps, targets carpenterants living high in Thailand's rain forest canopy.
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27. 这些树枝穿过雨林的树冠，坠落在潮湿的泥土地上，然后被分开放进标有特殊记号的麻袋里。
The branches crashed down through the rainforest canopy before settling on the damp earth and being separated into specially marked sacks.
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28. 森林的树冠作为自然缓冲，抵挡着风和雨的侵袭，而树木的深根也防止了水土流失。
Forest canopies serve as natural buffers against wind and rain, and the deep roots of trees help keep the granular soil from shifting.
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29. 生物学家在南极洲、贫瘠的沙漠、丛林的树冠、甚至家居植物的叶片上发现了黏菌。
Biologists have found slime molds in Antarctica, in barren deserts, high in the canopies of jungles and even on the leaves of household plants.
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30. 生物学家在南极洲、贫瘠的沙漠、丛林的树冠、甚至家居植物的叶片上发现了黏菌。
Biologists have found slime molds in Antarctica, in barren deserts, high in the canopies of jungles and even on the leaves of household plants.
