Lodgepoles are predominantly found at higher elevations in the western u.s. and canada .
美国黑松主要发现在美国西部和加拿大的海拔较高地区。
Because of this , most tropical species are also limited to particular elevations .
正因如此,绝大多数热带物种通常限制在特定海拔高度区域。
High elevations , however , are not the ideal choicefor human habitation , although some cave bears populations appear to haveadapted to them .
不管怎样,高海拔地区,不适合人类居住的地方,一些洞熊的种群似乎已经适应了环境。
He understood chemistry only insofar as it related to the baking time of bread at various elevations or the evaporation rate of alcohol .
他对化学的知识也仅限于有关不同海拔下烤面包的时间或者酒精的蒸发比率。
However , the lodgepole pine is expected to survive in the upper elevations of yellowstone national park and a handful of other locations , the study said .
然而,研究表明,海滩松还是能够在黄石国家公园的高海拔地区和其他几个少数地方存活下来。
The site is located in an ecosystem called high jungle , which ranges from dry mountain forests at low elevations to the mountaintop vegetation .
它位于称为高丛林的生态系统中,从低海拔的干燥山林延伸到山顶的植被。
An added threat is that with higher elevations just about 4 miles inland from the power plants , if a temperature inversion sets up in the atmosphere , radiation could be trapped .
另外一个威胁就是,距核电站4英里的地区海拔高,如果在大气层中出现温度逆转,核辐射就会被截留。
Thorne lay : " those are mostly design weaknesses that a good engineering think-through might say , let 's put the backup power at very high elevations so that it could not possibly get drowned out . "