剑桥词典[ 不可數或單數名詞：沒有複數形式的名詞 ] the fact that something is divided into two parts or the act of dividing something into two parts 分枝；分叉 [ 可數名詞：有複數形式的名詞 ] either of the two parts into which something divides 分枝後的一枝；分叉後的一部分 返回 bifurcation