北美黄杉 yellow fir
- 在北美西北部整个海岸线上的黄杉数量都在下降,不管是在大陆还是在离岸的岛屿上。
Yellow cedars population has been declining all across the northwestern coast of north America, both on the mainland and on the islands just off the coast. - 黄杉是北美西北部常见的树木。 但是从1880年开始的一个多世纪以来,黄杉的数量在逐渐减少。
Populations of the yellow cedar, a species of tree that is common in northwestern North America, have been steadily declining for more than a century now, since about 1880.
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