brachio-

例句：

1. 1. The arm of the chair is comfortable for sitting.
   椅子的扶手很舒适，适合坐着。
2. 2. The arm of the table is long enough to reach the dishes.
   桌子的扶手足够长，可以够到盘子。
3. 3. The arm of the tree is strong enough to support a person's weight.
   这棵树的树枝足够强壮，可以支撑一个人的重量。