Mr. Roosevelt's cottage was a bungalow at the top of a pinemountain.
罗斯福的小屋是一座平房，座落在一座长有松树的山的山顶上。
2
But as global warming snakes its way into higher altitudes, a less-welcome resident in taking up space in this fragile ecosystem: the mountainpine beetle.
但是随着全球变暖向高海拔地区蔓延，一个不受欢迎的居民进入了这个脆弱的生态环境：山地松树甲虫。
3
The mountainpine beetle is one step closer to crossing North America and turning eastern pine forests into the same bleak landscapes that have scarred the Mountain West in recent years.