And in the last two to three summers, these invasive organisms, this kind of Ebola of the trees, as it were, has swept through the primeval Hemlock forest of the east, and has absolutely wiped it out. I climbed there this past summer.
而且在最近两到三个夏天里，这些侵略性生物， 有如扩散在树木中的“埃博拉病毒”， 已经横扫了东部整个的原始铁杉林， 使它们完全灭绝。去年夏天我去那里进行爬树之旅。