1·Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
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。
2·In stands dominated by trees such as aspen, however, incipient gypsy moth outbreaks are quickly suppressed by viral epidemics.
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。
3·They had even let me sing with the choir, always leaving the sheet music in Aspen, our family cabin, on Friday or Saturday so that I could review it in advance.
他们甚至让我和唱诗班一起吟唱，还总是在周五或周日就把乐谱放进我们在戴维营的住处白杨楼，以便让我提前温习。
4·Yellow aspen leaves reflect brightly off the morning sun.
黄色白杨树叶明亮地反映了即将离去的早晨太阳。
5·Aspen groves are often one large organism.
白杨树林往往是一个很大的有机体。
1·He pointed south across the Yellowstone River valley to a tiny dot of willow and aspen that seemed to explode in brilliant yellows against the backdrop of prairie tans and grays.
他又指着黄石河谷的南边，那里隐约能看到柳树和山杨，就好像在一片灰褐色中绽出的一点亮黄。
2·I captured various fall scenery photos and found a large aspen grove to relax in.
我拍摄了各种各样的秋天景色的照片。发现有一个很大的山杨树林，可以在里面休息。
3·Aspen isn't very flammable, making for a slow-burning, non-fingertip-singeing matchstick.
山杨并不易燃，有利于制造慢速燃烧、不致烧伤手尖的火柴棍。
4·The Birch, pine, spruce, aspen and so on. in a more scattered distribution of small patches of forest landscape form heterogeneous patches of forest landscape pattern.
白桦林、樟子松、云杉、山杨等以较分散的小斑块分布于森林景观斑块中形成异质森林景观格局。