自然发生的森林火灾甚至比山体滑坡或积雪更能促进白杨树的生长。
Even more than mountainside slides of mud or snow, naturally occurring forest fires promote the survival of aspen trees.
相反，针叶树将侵入白杨树林的边界，越来越多地遮挡白杨所需的阳光。
Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
然而，在以白杨等树为主的林分，最初的舞毒蛾爆发很快就被病毒流行病所抑制。
In stands dominated by trees such as aspen, however, incipient gypsy moth outbreaks are quickly suppressed by viral epidemics.
《蒙娜丽莎》的原作是一幅画在白杨树板上的油画，如今收藏在巴黎的卢浮宫博物馆。
The original Mona Lisa is an oil painting on a board of poplar and is housed at the Louvre Museum in Paris.
当灯光再次亮起时，塞巴斯蒂安注意到约翰脸色像死一般惨白，像一片白杨树的叶子一样在颤抖。
When the light was lit again, Sebastian noticed that John was deadly pale and trembling like an aspen leaf.
对此的解释是，每一棵白杨，虽然看起来是独立存在的一棵树，但实际上只是一个巨型有机体的茎或芽。
The explanation is that each aspen while appearing to exist separately as a single tree, is in fact only the stem or shoot of a far larger organism.
一群成千上万的白杨实际上可以组成一个单独的有机体，被称为克隆，它们共享一个相互连接的根系和一套独特的基因。
A group of thousands of aspens can actually constitute a single organism, called a clone, that shares an interconnected root system and a unique set of genes.
他们发现，在富含单宁酸的橡树叶上，病毒杀死毛虫的效果要比在白杨树叶子上的效果差得多，因为白杨树叶子的酚含量较低。
They found that on tannin-rich oak leaves, the virus is considerably less effective at killing caterpillars than when it is on aspen leaves, which are lower in phenols.
当狄更斯发现他的第一部随笔，《白杨庄晚宴》，在《每月杂志》上刊登的时候，他热泪盈眶。
The first published sketch, "A dinner at Poplar Walk", brought tears to Dickens's eyes when he discovered it in the pages of The Monthly Magazine.
同时，本文首次将近红外光谱技术引入三倍体毛白杨的分析中。
Meanwhile, the paper introduces Near-Infrared Spectroscopy to the analysis of triploid Populus tomentosa for the first time.
白杨树林往往是一个很大的有机体。
白杨树的树叶转变为秋天的颜色。
这儿曾经有过一棵高大的白杨树。
在佐治亚州中部，生长有大量的枫香树和白杨树。
In central Georgia, sweetgum and poplar trees grow in large Numbers.
我赞美白杨树那挺拔的树干。
白杨实在是不平凡的，我赞美白杨树！
The white poplar is no ordinary tree . Let me sing its praises.
白杨树实在是不平凡的，我赞美白杨树！
The white poplar is no ordinary tree. Let me sing its praises.
河堤上的马用鼻子轻蹭着粗糙的棉白杨树。
滑雪索道悬吊在白杨树上空，白杨树的叶子刚刚开始染上一丝黄色。
Ski lifts idled above aspens, their leaves just beginning to show a tinge of yellow.
过了一会儿，我们在几棵白杨树底下找到一块阴凉的地方。
After a while, we found a shady place under some poplar trees.
这对雄海狸来说可不是好事，因为没有了白杨树它们无法在河溪里筑坝。
And that was a problem for Johnny beaver, because without the aspens he couldn't dam the rivers and streams.
小林子静悄悄的，一点风也没有，连白杨的叶子也无精打采地垂下头来。
So quiet the grove was, so still the air, that even the aspen leaves hung LIMP.
以前有研究声称，狼可以阻止驼鹿吃白杨树，而一项最近的研究表明事情可能并非如此。
Previous research claimed the wolves were helping to stop elk from eating aspen trees but a new study suggests this may not be the case.
实验结果表明：乔松素、白杨素和高良姜素是中国蜂胶的主要黄酮类化合物；
The experimental results showed that pinocembrin, chrysin and galangin were the main flavonoids in Chinese propolis.
呆呆地坐在车中，望着窗外缓缓退后的一棵棵白杨，不知远处的草原此时是一幅什么景象。
I am staying in my cart, staring through the window at the aspens moving slowly backward and figuring out what the distant prairie looks like.
然后尼洛起身走到茅屋门口，站在寂静的秋夜里，望着星星及随风摇曳的大白杨树。
Then Nello rose and went to the door of the hut, stood in the quiet autumn night, and watched the stars and the tall poplars bow in the wind.
然后尼洛起身走到茅屋门口，站在寂静的秋夜里，望着星星及随风摇曳的大白杨树。
Then Nello rose and went to the door of the hut, stood in the quiet autumn night, and watched the stars and the tall poplars bow in the wind.
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