这些昆虫能吃掉4百万英亩的云杉树。
这种昆虫已经毁坏了多达4百万英亩的云杉树。
使用该材料后云杉树苗成活率得以大幅度提高；
The survival rate gets higher when the coat is applied to picea asperata mast.
约翰·柯蒂斯用云杉树液做出了美国第一个包装口香糖。
John Curtis created the first American packaged gum using spruce sap.
云杉树将增长到200英尺的高度越来越高或一个直径8英尺。
A spruce tree will grow to heights of 200 feet and higher with a diameter of 8 feet or more.
但是他选择了火灾附近一棵巨大的云杉树来降落，然后爬到地面。
But he chose a large spruce tree to land in near the fire, and climbed down.
这段四个小时的路程，经过了山巅，河谷；老鹰在雾气弥漫的云杉树顶盘旋；有蝴蝶，有鸟鸣。
The four-hour journey passes through a landscape of sheer peaks and river valleys; eagles float in a hazy sky above spruce trees; there are butterflies, birdsong.
云杉树通常生长并拢，在这样做，他们必须长得非常高大，速度快，以获得必要的阳光。
Spruce trees typically grow close together and in so doing they must grow very tall and fast in order to obtain necessary sunlight.
阿拉斯加的云杉树皮虫发出隆隆声感谢过去20年暧和的夏天。昆虫已经毁坏掉了4百万英亩的云杉树。
Spruce bark beetles have boomed in Alaska thanks to 20 years of warm summers. The insects have chewed up 4 million acres of spruce trees.
它位于西弗吉尼亚州，这里的凉爽气候和盛行的风向，极大地影响着所能找到的用红云杉树来作为“标记”的形状。
Located in West Virginia, the cool climate and prevailing winds greatly influenced the "flagged" shape of the red spruce trees found here.
而杉树、松树和云杉之类的软木的成熟周期为10年左右。
Softwoods such as cedar, pine and spruce have a harvest cycle of about 10 years.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或雪松。
Drag onto the page to add a conifer tree such as pine, fir, spruce, redwood, or cedar.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或柏树。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or cypress.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或刺柏。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or juniper.
针叶类树包括松树、杉树、云杉、红木、刺柏，等等。
Conifer tree style such as pine, fir, spruce, redwood, juniper, etc.
针叶类树包括松树、杉树、云杉、红木、柏树，等等。
Conifer tree style such as pine, fir, spruce, redwood, arborvitae, etc.
针叶类树包括松树、杉树、云杉、红木、刺柏，等等。
Conifer tree style such as pine, fir, spruce, redwood, cedar, etc.
针叶类树包括松树、杉树、云杉、红木、刺柏，等等。
Conifer tree style such as pine, fir, spruce, redwood, cypress, etc.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或柏树。
Drag onto the page to add a conifer tree such as pine, fir, spruce, redwood, or cedar.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或柏树。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or juniper.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或柏树。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or juniper.
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