剑桥词典[ 不可数或单数名词：没有复数形式的名词 ] the fact that something is divided into two parts or the act of dividing something into two parts 分枝；分叉 [ 可数名词：有复数形式的名词 ] either of the two parts into which something divides 分枝后的一枝；分叉后的一部分 返回 bifurcation