108．The weight of a gibbon(a small ape)hanging below a branch arches theterminal leaves down SO that fruit—bearing foliage drops toward the gibbon's face．

(难词arch…——使…弯曲下来)

悬在树枝下的长臂猿(一种小型猿类)的体重使树枝末端弯曲下来，以便结果的树叶掉向长臂猿的面部。

分句1：The weight of a gibbon(a small ape)

分句2：hanging below a branch arches theterminal leaves down

分句3：SO that fruit—bearing foliage drops toward thegibbon's face

1和2嵌套

2和3并列