1、 A dark wall of trees—red spruce,balsam fir,beech,hemlock—surrounds you.
你会被黑暗的树墙包围—红云杉、香脂冷杉、山毛榉和铁杉。
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2、 Although both feed by draining the hemlocks of their juices, the adelgids also inject toxic chemicals into the trees.
虽然它们都依靠吸铁杉的树汁存活，但球蚜同时还把有毒的化学液体注进了树木。
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