The needle-shaped leaves of the conifers are virtually inedible 针叶树的针状树叶根本不能食用

99. These stunted shrubs mark the tree line -
    这些矮小的灌木标志着森林界线
100. the beginning of the boreal forest -
     北方森林由此开始
101. the taiga.
     这就是泰加林带
102. The needle-shaped leaves of the conifers are virtually inedible
     针叶树的针状树叶根本不能食用
103. so this forest supports very little animal life.
     所以生活在这片森林里的动物非常稀少
104. It's a silent place
     这是个寂静的地方
105. where the snow is unmarked by footprints.
     雪地上没有被踩过的脚印

来自《行星地球 第一季 第一集 Planet Earth S01E01 从北极到南极》第 102 行